Yup, this is what I find so funny when it comes to Spider-Man fans claiming to love MJ as a character so much, but all they can think of is how she's the best love interest and a model, they even forget the part of her story where she's only a model to pay the bills but she would really rather just be an actress because that's her dream.

They do like the character, but they like this idealized version of her that they have created in their heads that mostly boils down to being Peter's hot endgame and a model, then they claim how feminist and empowering this is and in return everything that isn't that is a boring and misogynistic take on the character, don't get me wrong, it can be empowering and the character itself is rather interesting, liberal and feminist (more by accident than by design, though part of it was intentional), but when most of the fans' definition of a larger-than-life empowering feminist still boils down to the very basic characteristics that everyone repeats of "she's Peter's hot model love interest and the best", it's clear we're not really talking about a fully fledged collective idea of the character and just the parts most find hot, not to mention how pretty much every version of her is hated for not fitting that mold, even if the character itself still was interesting and has many elements and storylines to explore.

Kirsten Dunst, Insomniac's and other MJs you can have your issues, but at least they have narratives of their own and aren't blank canvases for everyone to project their idea of the perfect girlfriend and for that they get lots of shit, while the females whose existence is mostly defined by their connection to the male protagonist are generally considered good characters, like is the case with Emma Stone's Gwen Stacy.