Bismillah
You are making extreme judgment based on aayah
I am making extreme judgments or you are making extreme judgments and trying to act like an expert and giving out your tafsir?
"If any do fail to judge by (the light of) what Allah hath revealed, they are (no better than) Unbelievers".
the theme of the ayah is the same: whoever judges by other than the laws of Allah is a kafir. This is what Allah is saying and this is how it has been understood for 14 centuries.
In this aayah, Allah is saying that those Jews who change Torah to hide Prophet of Islam's signs are the ones who are the unbelievers.
you are not an expert so bringing tafsir from an expert, someone who is hujjah to everyone. For example, the companions of Allah's Messenger (sal-allahu alayhi wa sallam). The ayyah is specific and general as this is the case for many ayaat in the Qur'an. Allah is telling about jews and warning them that He gave them the Torah so that they rule by Allah's laws but they didn't. Read what whole ayaat are saying: Indeed, We sent down the Torah, in which was guidance and light. The prophets who submitted [to Allah ] judged by it for the Jews, as did the rabbis and scholars by that with which they were entrusted of the Scripture of Allah , and they were witnesses thereto. So do not fear the people but fear Me, and do not exchange My verses for a small price. And whoever does not judge by what Allah has revealed - then it is those who are the disbelievers.
And We ordained for them therein a life for a life, an eye for an eye, a nose for a nose, an ear for an ear, a tooth for a tooth, and for wounds is legal retribution. But whoever gives [up his right as] charity, it is an expiation for him. And whoever does not judge by what Allah has revealed - then it is those who are the wrongdoers.
Which context are you reading? Did Allah say if Jews rule by other than Allah or did He say whoever? By guidance and laws of Allah, is Allah only talking about hiding signs about the Prophet (sal-allahu alayhi wa sallam) or is He covering both: ruling people by laws of Allah and hiding signs of the Prophet (sal-allahu alayhi wa salam)? The 2nd ayah make it very clear that it is covering both point that's why Allah said: "therein a life for life..".
Even from the link you quoted this ayah, we read in tafsir of Imam Sayuti (rahimahullah): Surely We revealed the Torah, wherein is guidance, from error, and light, that is, an exposition of the rulings, by which the prophets, from the Children of Israel, who had submitted, [who] had been compliant before God, judged for those of Jewry, as did the rabbis, the scholars among them, and the priests, the jurists, according to, because of, that which they were bidden to observe, [that which] was entrusted to them, that is to say, [that which] God bid them to observe, of God’s Scripture, lest they change it, and were witnesses to, its truth. So do not fear men, O Jews, in disclosing what you have pertaining to the descriptions of Muhammad (s), ** the ‘stoning’ verse and otherwise*; but fear Me, when you conceal it; and do not sell, do not exchange, My signs for a small price, of this world, which you take in return for concealing them. **Whoever does not judge according to what God has revealed — such are the disbelievers, in it.*
And therein, in the Torah, We prescribed, We made obligatory, for them that a life, be slain in return, for a life, if it has slain one; and an eye, should be gouged out, for an eye, and a nose, is to be cut off, for a nose, and an ear, is to be amputated, for an ear, and a tooth, should be pulled out, for a tooth (a variant reading has the last four [nouns] in the nominative); and for wounds (read wa’l-jurūhu or wa’l-jurūha) retaliation, that is, the person is entitled to retaliate if this is feasible, as in the case of a hand or a leg; but in cases where one is not able to [retaliate], this is left to arbitration. Although this stipulation was prescribed for them, it is established in our Law; but whoever forgoes it, that is, retaliation, out of charity, able to restrain himself, then that shall be an expiation for him, of what he has done [of other sins]. Whoever does not judge according to what God has revealed, in the matter of retaliation and otherwise, those are the evildoers.
So hiding also includes other laws which they hide from people and didn't judge people by those laws, i.e., stoning an adulterer. And if you read tafsir by ibn kathir, ibn Jarir (rahimahumullah) and others you will find the same thing.
You won't find the solutions of present problems directly addressed in Quran, sunnat, hadith, etc. You need interpretations.
Let me remind you that your first sentence is form of heresy and I would advise you to rectify yourself from this statement. Islam is for all times; how can you then say that we cannot find solution for current problems in Islamic texts!? Everything is already found in the text explicitly or implicitly. As far interpretation, not every problem we face today requires any sort of ijtihad. If there is a need for ijtihadi interpretation then it is done by those who are qualified to do so.
But who decides which interpretation is correct, and which is wrong?
brother, I have already told you that we understand the Shari'ah how the companions (radiAllahu anhuma) of the Prophet (sal-allahu alayhi wa sallam) understood it. As Imam Malik (rahimahullah) said that whatever was not part of deen at their time will never part of deen at our time. As far new ijtihad then it is decided by those who are experts in the field and known for their knowledge, taqwa and trustworthiness.
For example, is picture-taking haraam? You ask three different maulanas, and you will get three different answers.
picture-taking issue is pretty clear but we only get confused when we want to seek an answer which we want and not answer which will take us to truth.
So now when that religious tyrant imposes complete ban on picture-taking and you disagree then would you still consider that tyrant to be following shariat according to your interpretation?
In prophetic world, likeness or disagreement of human beings with laws of Allah has no relevancy. Some part of the Shari'ah being implemented is better than nothing. So if tyrant ruler imposes this shari law or any other shari law then I don't see why I would have a problem with it as long as correct understanding is implemented and imposed.
and Allah knows best