It's perfectly fine to think a band is awful, but let's be kind to those who disagree with you. c:
I, personally, love Fall Out Boy. I've been to one of their shows, and they truly engaged their fans. Patrick even went out to eat with some people after the show.
Yes, it's pop punk. But that doesn't make it any less legitimate. Just like how For Today is a hardcore band, but composed of Christians. It's still hardcore.
If music is truly the fruit of love, let those who enjoy different genres, enjoy it. Right?
No need to be hateful, we're all friends here.