Repost from another comment
The cultural left is against her for being very visibly transphobic (along other things). Additionally religious reactionaries historically don’t like the fact her books are inspired by historical witchcraft practices, as pointed out in the meme.
To quote wikipedia’s summery:
…Whited asserted in 2024 that Rowling’s sometimes “flippant” and “simplistic understanding of gender identity” had permanently changed her “relationship not only with fans, readers, and scholars … but also with her works themselves”. https://en.wikipedia.org/wiki/Political_views_of_J._K._Rowling#Transgender_issues
I enjoy being able to see and interact with other people in a bunch of different contexts who are like minded without being so similar it becomes an echo chamber.
I do miss all the world building sub’s and projects on reddit, at this point I only keep my account to post in one community. Additionally r/dogelore and r/polandball are great, and it appears those subreddit are branching out to other platforms in response to reddit recent changes.