Ever been in a situation where a bunch of girls in a scene start giving you weird looks, ignore you, whisper to each other in front of you, and freeze you out of anything important, all because you said something that made someone feel "uncomfortable"? That's what's happening to Jason Aldean and anyone who gets cancelled. A bunch of people (mostly women and Jews) who get the "ick" about someone and decide they can't hang around the little friend group they call the economy of the United States of America anymore.
Sometimes these situations are resolved when a mean girl pokes a psycho girl a little too many times and they end up brawling in the parking lot where the psycho always wins. It's possible we need a similar solution.
Honestly, I only watch fighting sports so I wouldn't know. Has the NFL gotten that bad?
Yes. Yes it has. Progressive commercials where they mock their viewers, progressive half time shows, pink jerseys for breast cancer, a couple minutes of plays for several minutes of commercials, dumbed down plays, and the aforementioned lgbt/ black lives matter. Even some of the normies have noticed, friends of mine call it the "National Felon League" and have switched to college ball. Still a lot of normies watch it though, but there has been enough of a drop in viewers that even South Park had mocked the NFL.