Are we talking fertility here, or sexual function? If it’s the former: consider opening an account at the sperm bank. (Their interest rates kinda suck, though.) That way, you won’t have to really worry about becoming infertile.

the whole premise of HP is “what if an orphan living in an abusive household could become a spoiled nepobaby” so i’m not sure JK even thinks of those things as bad

Harry names one of his kids after Draco because Draco does one decent thing at the end of book 7 and that is enough to make him no longer be a reprehensible, racist fuckwad in the eyes of J.K. and a lot of her audience

Nah, her hate speech isn’t even good.

Eh, I think it’s a bit of both? The first books just generally where fairly whimsy and light-hearted and you don’t really need your demographics and societal structures to make sense when you are writing a whimsical, light-hearted story for kids.

The later books become darker and more serious so the artifacts of those earlier worldbuilding decisions become more and more obvious over time.

JKR is allowed to learn and grow! She just refuses to and her takes keep getting worse.

They tried expanding the world, it sucked and nobody liked it (also, the worldbuilding is so weak that it falls apart if you consider wider society outside of Hogwarts for five minutes, because the series started as books for grade schoolers)

She was already a TERF way before Covid.