Personally, I'm on the "don't be an asshole" side of things when it comes to people with very awful, but ultimately harmless taste in entertainment.
But also enjoying slop is not an identity. If it really hurts your feelings when someone dunks on you for legitimately enjoying Spiderman XXVI: A Megaverse at Home or whatever it was called, then you should probably take a closer look at the unhealthy way you're internalizing your connection to media consumption.
I wouldn't partake in dunking on someone for that, mostly because I kinda get it. I also like to shut my brain off every once in a while and enjoy mindless fast-foodified entertainment slop, but if someone wanted to roast me for it I'd probably laugh at myself with them. (Note: I always pirate that shit, I wouldn't be caught fucking dead paying for it and I will always relentlessly mock pay pigs for being some of the most boot addicted people on this Earth)
While they are enjoyable pieces of cinema, every single thing I've read about the conditions of the production of the Spider-Verse films has made it sound soul crushing.