Don't believe the media and you sure as hell shouldn't believe "social media".
It's not about believing social media. Public perception is formed through social media, and the league is very cognizant of it. The league cares more about public perception than anything else. Additionally, things that were barely reported in the 70's are tweeted and retweeted and whatever else people do with bits of information now. And, at least in the Staubach incident, there was no harm done. Longley hit him and ran away like a girl.
Geno Smith is a starting QB in the NFL, he had his jaw broken by another player in the locker room and he's going to miss 6 - 10 weeks. That will always draw the attention and ire of the league office, because they protect QBs more than any other group.
For people saying the league shouldn't do anything let me ask a simple question - what if one of the Rams players had walked up and broken Romo's jaw yesterday? Would that be worthy of an investigation? Is it only investigated if the player is on the other team? What about when the teams are practicing together? What about offense or defense? For all of you who think the league is overstepping its bounds, when is it OK for a player to break another player's jaw? Frankly I think the Jets should have had him arrested on the spot. At the very least I'd make sure that even if he makes the Bills he won't earn any money this year, because I'd be suing him for the loss of Geno Smith's services.