This isn't about "other peopke" though, recognising that your own parents are bad parents is very important, not sure why you try to dismiss that. People telling you that you are wrong, your parents actually did good, is just gaslighting and damaging.
Have you spent much time interacting with children of abusive parents? I encourage you to go do some research a learn how bad it can get and how difficult it can be for them to struggle towards acknowledging and coming to terms with that abuse.
