JK wrote about kids how they are, not some boring preachy idealised version of how they should be. (The books would have been a lot less popular if she’d done the latter.)
Most teenage boys aren’t very nice to teenage girls, especially clever ones, and it’s ok that JK depicted that. Perhaps it is a bit depressing that Hermonie married Ron, but again she is being realistic. Nice girls fall for tossers all the time.
JK has been in an abusive relationship and modelled the character of Hermonie on herself, so it’s not a big surprise that Hermonie’s relationship wasn’t great.
I hate it that this article was written, because it is part of a systematic and very deliberate campaign to bash JK in the media whenever possible and damage her legacy.
The fact is, JK is a literary genius, the most successful woman who’s ever lived, and has given a huge amount of money and energy to charity, especially helping children.
I think she is amazing and I have no respect for people who write articles - or mumsnet threads - trying to damage her legacy.
If you don’t like Harry Potter go write a better book. Good luck with that.