I agree with everything you said, pretty much.
I am not stating myself clearly enough, I think. Psychology is proven. People are not snowflakes about their reactions to abuse. Yes, there are always outliers, yes, people ARE different in many ways. It is not always possible for someone to "get over it" and move on. Sometimes, it is possible, yes, sometimes it is not. Saying "get over it" does NOT work for those who can't get over it themselves. The level of abuse that one must endure to push them over the line where they can't deal with it themselves will differ from person to person. Everyone who gets pushed over their own line will react in extremely similar ways, though. You can ignore all the science and evidence if you like, but if you go volunteer or go to work in places where the less fortunate wind up, I think you'll find very, very quickly that the vast majority of them were abused as a child, past their "line" and can't deal with it alone. Distilled out, this abuse shows up as horrible decision making.
Some people are indeed bullied enough to get pushed over their line. There is zero debate about this. The same amount of bullying won't necessarily push another person over their own line.
Some people can "get over it" to a degree, but wind up with traits like a hair-trigger temper, somewhat severe depression of varying degrees, a history of very bad decisions, or they find relationships where they wind up abused again, or they find a relationship where they can become the abuser, and gain the control they never had as a child.
Another part of the discussions is what does or does not constitute "abuse." The definition of this will vary from person to person, and I think this is where a lot of the argument comes from.