There is a lot of discussion on the Nusayri Alawis. Some say they became extinct in history. Some say they still continue to exist. Some say that the enemies of the Shia made up accusations against them. It’s difficult to verify all of that.
However, we do know that there are Alawis today in Syria and Turkey who consider Imam Ali to be Allah. Such Alawis commit blasphemy/shirk and we condemn that. But there are some other Alawis who don’t believe he is God.