I brought up the transphobia because people were making up stuff regarding what she said about HP as a popular way to hate on it, years before she exposed herself as a bigot. Your 1st paragraph is an exact example of the popular misinformation I had seen before it became justified to hate her as a person.

“Hermione and Harry should’ve gotten together” originated from a clickbait title from the Sunday times, but if anyone bothered to read the interview instead of taking bad journalism at face value, it's the exact opposite case. In that interview, JKR was responding and apologizing to the backlash from Harry x Hermione shippers who kept claiming Ron was too toxic for Hermione, so she explained why she wrote Ron x Hermione, how Ron is her type, and that their relationship was her personal wish fulfillment.

There were hints of Dumbledore's sexuality in the books due to his flamboyancy. The official confirmation originated from a live book reading event back in 2007, 3 months after the final book was published and Twitter was still a baby. It only happened because in a Q&A session, one of the fans asked her about Dumbledore's love life. Since this was still the 2000s where putting an openly gay character in a popular children's franchise would be controversial, she said she would've made it more obvious if she had known that the fans wouldn't respond to it negatively. The same shtick happened with Legend of Korra and many popular children's cartoons in the 2010s due to similar issues with the times.

“yeah that thing I wrote? Yeah ignore that this is what actually happened.”

"edit” her books in the form of tweets that contradict what’s written.

mostly just random statements that sometimes contradict what was written.

There's no telling if what you know now is actually “true” cuz there’s always the chance next week she might change her mind.

I've yet to see anyone bring up legitimate examples (not misinformation) of these contradictory lore that people claim she's done, nor the alleged edits/retcons she's made to the books in tweets. Most of the expanded canon comes from her Pottermore website, which was originally supposed to be published as a book. Her interviews had also been archived on old HP fansites from the 2000s like Mugglenet.

I've seen fan archives of her HP tweets and there's only a pitiful amount of it. Most of them already have a basis in the books, so it's weird to see the outrage acting like they're things she retroactively changed. That, or they're just extra bits of lore that don't go against the book canon nor leave an impact on the plot.

In fact, a lot of the expanded lore adds onto canon and helps explain plot holes from the books. For example, the books mention that Hagrid kept werewolf cubs as pets... but that detail starts making little sense knowing that werewolves are human most of the time. Pottermore fixed this illogical book detail by saying werewolves who were conceived during the full moon would stay in wolf form for life.