Boyfriend said he’d smash her skull in?

My boyfriend and I were arguing about a time when he said that if I hit him, he would hit me back. I felt appalled and he said that obviously if I had hit him he would de escalate but if a woman was beating him up , he would beat her up / hit her too. He also said that if a woman were stabbing him he would smash her skull in … Am I wrong for thinking that is too much? Just the thought of me smashing a guy’s skull in for stabbing me, to defend myself feels bad. What do you think?

Updates
6 mo
This is all hypothetical. No one is hurting no one and we don’t want to hit each ohthrr.
But what I’m confused on now is that , later on after everything settled. I asked him why he said that (about the skull), he said because he was angry. Then, after discussing he said he said nothing wrong by defending himself that way. Did he just contradict himself? Did he say it bc he was angry or he thinks it’s justified?
Boyfriend said he’d smash her skull in?
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