You mean like Bo Jackson & Deion Sanders...or even Brian Bosworth for that matter....
Exactly, which speaks to a technological shift, not a psychological shift.
And you think coaches don't get that today? Wow. I guess you didn't note Sullivan traveling to see Geno a few weeks ago. But here's the thing, athletes have always been prima donnas. Ty Cobb was an egotistical jerk, Joe Namath is probably the best known example of prima donna in football, Pierre Laroche I already mentioned elsewhere. The psychology of these guys has never changed. Only the medium by which we have access has changed.
Your continued mistake of equating technological change to player psychology isn't based in reality. Players haven't changed one bit psychology wise. Only the medium by which they can now express themselves. If things like 30 for 30, Hard Knocks, Twitter, Instagram, etc., existed 30 years ago, I guarantee you all those characters I mentioned would be no different than the ones we see today...they would be all over it. And the reason is simple....they are all prima donnas. Did you ever see the movie Slap Shot? It's based on minor league hockey back in the day. And there was a lot of truth to it as well.