there's no such thing as high and low culture anymore, everything has become a commodity. this erosion is deeply tied to the commodification of art, where everything, regardless of its origin or intention, is packaged, marketed, and sold in a manner that prioritizes consumption over meaning. art is no longer judged by cultural significance or intellectual depth but for its ability to be reproduced and consumed within a media saturated environment. this is readily apparent in the "taste" (or lack thereof) of normies when it comes to things like music or anime. 

the most popular works are those that are easily digestible, formulaic, and designed to appeal to the lowest common denominator. the mainstream success of shows like JJK, my hero, and demon slayer are symptomatic of this trend. they lack any real depth or innovation that might define more avant-garde or intellectually challenging works (madoka, NGE, lain, etc).