What's really happened here is the people running the sport realized the way it was being played was such a danger to the players that it threatened the future of the sport. Even the most old-school fan would be hard pressed to watch a "Jacked up!" segment from the early 2000s these days and say, "Oh yeah, clearly visible brain damage, we need to go back to that!"
So they implemented rules to make it safer. And, for the most part, they have worked! It was rough to start, with tons of flags and people getting pissed, but eventually players adapted and "Jacked up!" hits were virtually eliminated As a result, the game is much safer today while still being plenty physical and exciting.
However, they went too far, mainly around the QB. Everyone has seen the terrible calls on QBs, and they are reaching a fever pitch. Almost certainly, the rules will be adjusted in the offseason, because believe it or not the NFL actually wants a good product and fans that aren't pissed off. It just takes a while to get it right, especially when you are understandably trying to err on the side of safety.
But in the meantime, pundits will use a few bad roughing the passer calls to illustrate that gender surgery on kids is wrong, because again, everyone loves mixing sports and politics.