I think an underrated point is also - the world is just a less violent place, in general. Outside of very specific places because of very specific instances (ie. Syria), almost everywhere in the world is less violent than it was twenty or thirty years ago. So, if you're a twenty or twenty five year old kid getting into the business, even if you lived in a "bad neighborhood," outside of say, Chicago, it's likely a far better 'bad neighborhood' than it was even a decade or two ago. Hell, even Compton got gentrified. Hazing is far less of a thing in sports, frats, etc. I think that's also a reason why our political arguments have gotten so overheated, but that's a whole other argument.
So, most people simply don't have the same the same experience with violence than say, somebody growing up in rural Oklahoma or a tough neighborhood in New York did during the 70's or 80's before they got into training where they likely were stretched or thrown around for real. Now, that's a positive thing, society wise, but it's a negative thing, when it comes to creating people who can push the idea they're violent people doing violent things for money. Even most UFC guys are basically dudes who spend too much time in the gym, but who would never actually want to permanently hurt their opponent. Even though it's not that true, Rick Steiner in 1999 WCW seems like a far more dangerous human being than 80% of the UFC roster, let alone anybody in the WWE.
Or in other words, there are far far less probably close to sociopathic violent people in wrestling, because the other people in wrestling wouldn't want to work with that guy. I mean, just personally, if any of us had the talent and accounting for different societal views, would most of us like to have spent time in the testosterone and drug fueled locker rooms of the mid-80's or early 90's where seemingly the only thing to do after a show was either getting wasted chasing after rats or hanging out alone in your hotel room or the relatively chill locker rooms of the modern era, that's far more gender and racially balanced than anything in recent history. I mean, I bet Samoa Joe is happy he can just be a badass instead of whatever terrible gimmick he would've gotten in 1987 World Class or whatever.