hmmmm I definitely see what they mean BUT Kotaro only got that bad partially because of All For One’s manipulation + getting thoughts into his head. Tenko was only born because of AFO, and before Tenko was born, Kotaro looked pretty chill and bright. Naoko points out that Kotaro got worse/changed, and the stuff with Tenko was the breaking point.
So I see what that ranter means, and if his anger/issues were enabled, Natsuo could absolutely get to the point. Anyone can if they don’t watch themselves. BUT I don’t think he would because a) AFO is dead so Manipulative Man is gone, b) Natsuo would be TERRIFIED of become like Enji so I actually think he’d lean so far to the other end he just straight up becomes emotionally detached/distant/work overtime like the stereotypical doctor parent, c) I actually think he’d be more like Priyanka Maheswaran, Connie’s mother from Steven Universe - strict rules as a safety blanket, believing he’s doing the best for his kids, not really ‘aware’ of what’s going on with them, overworking and underestimating his own kids. “You can’t fight them, you’re just a child” “FATHER I HAVE A BLACK BELT IN MARTIAL ARTS, I CAN TAKE DOWN A GROWN MAN TWICE MY SIZE” type deal.
Natsuo would be a lot more emotionally abusive rather than physically abusive, because that’s a lot harder to catch. If Natsuo doesn’t work on himself, it would be in the little things he says and comments on that would negatively impact the kids, not in the physical.