They don't care about their religion, they just want to pick and choose the bits of it that support all the hateful shit they already want to do and cover it under the guise of "religion".
Apparently neurological studies have been done on this. When you're asked your opinion, one part of your brain lights up. When you're asked what you think another person's opinion is, a different part lights up.
Guess which part lights when you're asked what you think God's opinion is.