I think there are scenarios where the power imbalance argument is relevant but I feel like in this case it actually feeds the issue.The power imbalance isn't the same though. I'm not a massive fan of hers but I very much doubt that a hormonal woman lunging towards him whilst holding a baby (if that's what it was) was exactly threatening to him. Certainly not as threatening as a man lunging towards a woman. You can't apply the same rules to both genders IMO.
Many men would worry about defending theirselves against a woman because they have more power. They worry about getting out of DV situations because they shouldn’t be in the situation due to having more power. And so it escalates, because they’re excusing the situation, thinking they can regain the power at any time. Until they can’t.
I do believe that women are the majority of victims of DV and it’s important for there to be shelters that can accommodate biological women only etc etc but at the same time I’m not going to excuse a woman for assaulting a man (and then bragging about it on social media) because she’s had a baby and *may* have had PND.