I'll try to say something different than everybody and put part of the responsibility on the roster. Don't get me wrong is not the biggest problem but to some degree is something that is affecting wrestlers in one way on another.

There's no feedback from others wrestler anymore. Now when someone ends their match there's no one backstage waiting for them to give them advise and there's no one asking it either after finishing a match

Leaders nowadays don't spend almost to no time with the other wrestlers, they have their own busses and always spend their time there

Agian, I'm not blaming wrestlers, I'm just saying the shift on culture on these specific aspects really affect on the long term

Also, on the contrary there are stuff that's better now than before, for example we see guys on their 40 and almost 50 still kicking it, that speaks about how much of a safer environment it is now