I think that what makes Parsons such a great football player are some of the attributes that give him his personality and his demeanor. These attributes are also responsible for annoying some of the Cowboys fans.
In order to change his behavior you would have to force him to change his attitude, his demeanor, his personality. Such a change might make him more acceptable to some fans but it could also change the way he plays the game of football.
We all realize that nobody is perfect. If I decide to attach myself in some way to a person, be it emotional, professional, or entertainment wise, I won't be happy unless I accept that person's flaws. Actually, that's probably the reason I'm happily married. My wife knows I can be an idiot and she overlooks that mostly because I do seem to have more qualities that she appreciates.
Micah Parsons isn't trying to hurt anybody. He's not evil, he's just young and famous and he wants to enjoy it. I think most people realize this and consider the source. After all, how could an older adult allow himself to be offended by a young man, aged 24, who is simply participating in social media?