1. When people think you're a poser for loving the band's popular songs. I understand that there could be more or maybe even better gems in the album, but the songs are popular for a reason... they're GOOD. And i think they should be loved they way the band intended it to be.
2. "Ohhh my favorite songs are getting tiktokfied" or something like that. Yeah yeah tiktok has a bad community and overall shitty rep but honestly I'm just happy that the band is getting more recognition, since most bands back then (and indie bands now) often break apart because they don't have enough of an audience for them to keep playing. Panchiko and Her Words Kill for example. They're pretty lucky compared to the billion possibilities of masterpieces out there in the world that have never surfaced lol.
3. This might be a little bit of a stretch but when people hate on the "Electric Feel Incident Guy" (if you know who I mean). Sure he looks a little silly but honestly, he's way more entertaining than the bands who can play beautiful notes and sing like an angel but stand as still as a rock in a PERFORMANCE. You're supposed to engage with the audience than sit in your little corner, and if engaging gets you to move around much and feel the music, then hell yeah! This can't apply to orchestra performances I guess lol but you know whay I mean.
As for an actual music pet peeve, I personally don't like it when there's like, more than two guitar solos in one song because for me, that's kind of pushing it. Unless you're like Steve Vai or some guitar god then do whatever the hell you want, man.