I’m Sunni, but I’ve never heard any Shia say that Hazrat Ali was God. Also, some hadith are disputed by the Shias. And all I’ve to say is that just because they are in Sahih Bukhari doesn’t mean they are beyond reproach. Only fanatic shias have problems with the Sahaba, most don’t. Lastly, no Shia ever tried to discredit the Quran.