Definitely not odd an odd thing for anyone to randomly decide - your comment suggests that you’ve not been subject to this kind of controlling relationship before. If so, and I hope that’s the case, then you’re very lucky.
Unfortunately, that means that while you might sympathise with the OP, you can’t empathise with her and this is leading you to come across as insensitive and victim-blaming. What seems like a reasonable question/assumption to you can actually be quite harmful because from her posts, it looks like she is gaslit constantly into believing that her actions are somehow wrong by her partner and your posts reinforce that view. When you’re in the middle of a relationship like this, you question everything, especially your own instincts on these matters.
If you had been subjected to behaviour like this before, behaviour that is instantly recognisable to anyone who has been through it, then you would instinctively understand that and it would make it much harder to put forward your viewpoint, and the OP’s implied fault.
EDIT: having now seen your above post doubling down, it’s a real shame you can’t see any other viewpoint than your own and that you hadn't read the other thread, referred to in the OPs replies. Also, I’m married, with my DH for 15 years and expecting our first child. It’s not single people keeping people single, but sometimes those who made a good call to become single after a toxic relationship learn enough to both make better choices for themselves moving forward and to recognise the same red flags in other people’s descriptions of their relationship dynamics. Not misandry…experience and wisdom.