Maybe Alex isn't suited at all for the lifestyle that Victoria wants, which is perfectly fine. And if that's the case, then it's an incompatibility issue and either he should step away from working with her and do his own thing in order for them to be happy together, or divorce as he's voiced wanting kids and she doesn't/is on the fence.
I get Victoria has some questionable behaviours/traits but Alex isn't absolved from his own too just because he has to deal with her. If yes, she's intentionally ignoring him being unhappy for her career's sake, then yeah she's terrible for that, and he needs to remove himself from that. But if he doesn't communicate his issues with her, then he's not innocent either. It's good on him that he is starting to work on his mental health and publicly talking about it but I don't think we can't just solely put the blame on Victoria for it. I think this is an incompatibility issue and something drastic has to change.