OK, I’m going to try and answer these one at a time.
Should people reject atheism because of the American Atheists?
Well assuming you mean that American Atheists give atheists worldwide a black eye; I think the answer is no. One small group is not representative of the entire group.
** Should they reject Islam because of the Taliban? **
No, for the same reasons as above.
**Should they reject Christianity because of Fred Phelps? **
I don’t know who Fred Phelps is. But I think it’s safe to assume it’s someone who gives Christianity a black eye.
I think I see what you’re trying to say. Just because some Christians are twits, doesn’t mean they all are. I think the problem runs deeper than that. It’s almost like it’s ingrained in them to say or think this stuff. I think what I’m trying to say is that I have a problem with Christian doctrine. (Is that the word I’m looking for? See, this is why I try to stay out of theological debates. )
I’ll think on this some more and try to figure out a way to explain it better.