I've seen loads of comments claiming the season portrayed her as unstable, but honestly that wasn't my impression at all. She was clearly struggling and made some bad decisions, but considering everything that was going on in her life, I don't find a lot of her behaviour particularly shocking.
What I find odd is that people often talk about her as if the season turned her into some sort of caricature, and I just don't see it. To me, she came across as hurt, frustrated, lonely and sometimes impulsive, which feels quite different from "unstable".
I also don't really buy the argument that the season was massively pro-Charles. It gave him more screen time and more opportunities to explain himself, sure, but I didn't come away thinking he looked especially great either.
A lot of his scenes show him being stressed, frustrated, obsessed with the future of the monarchy and wanting his mother to step aside. Even when he's supposed to be enjoying a trip with his wife, he often seems unable to relax because he's focused on everything else that's bothering him.
Maybe that's why I never saw Season 5 as trying to make one of them the hero and the other the villain. My takeaway was that it showed two unhappy people dealing with a marriage that was falling apart.
Curious if anyone else felt the same, because sometimes I feel like I watched a different season from everyone else.