It wasn't the point of view of any scholar or some one in charge. If u had read it properly then some of the people (the so called wahabis) have replied in denying this practice. I don't think if anyone say La ilaha il lalah mohammed ur rasool ullah then it becomes haram to kill that person. I think.
Salaam
Don't worry ..you are not the only one. As you said that in youe opinion you can't kill anyone without due reason if they recite La Illaha Illallah Muhamdun Rasoolullah..that's true but some ''ulamaa'' don't accept this. We can find lots of ''fatwas'' against many prominent figurs of Islam like Hazrat Abu Hanifa, Hazrta Imam Ghzali, Hazrat Mansoor Hilaj etc.