She announced that Dumbledore was gay in 2007. One year before gay marriage was legalized in the US. The "woke crowd" did not exist in 2007.

She didn't say Hermione was black. She simply approved of Hermione's black actress in Cursed Child. She said she never specified that Hermione was white (Caucasian). Some people tried to "gotcha!" her, saying there's a line in the books where it says "Hermione's white face" -- which at best, implies that Hermione is definitely light-skinned. Her race, however, is never stated outright in the books.

Her 'pandering on Twitter' was simply her answering inane questions from fans about random details in the books. I recall JKR receiving flack for saying Anthony Goldstein was Jewish. She did not tweet that out of nowhere: it was a reply to a user who asked her if there were any jewish students at Hogwarts. What was she supposed to say? No?