Well, some might, but I don't. I figure each true religion (violent Muslims are a political group...) deserves respect from all non-believers-in-that-religion.
I just tell folks when we're talking religion "Boy, we are sure gonna be surprised when we get to Heaven and realize that God doesn't favor any one religion...all he requires is a belief in him!"
RE: Trash talking other religions.
Why would they perceive they need a savior from their sins if they don’t know they have sinned? What shows a person their sin? The Law withheld needs no Gospel.
Scourge then Cross.
Law THEN Gospel.