Despite the media’s best efforts, the biggest and greatest bully-pulpit in the world is the office of the Presidency. The Donald can draw the attention of the world in any direction he chooses to... And if he directs his anger toward something people will notice and they will respond.
When Goodell came out swinging after President Trump criticized players who disrespected the anthem and the flag it was a mistake. That mistake was then compounded by the owners locking arms in unison with those same players who disrespect the country that allows them to be among the richest people in the world because they play a sport for entertainment.
Their bottom line is now taking a beating and that will not do. The owners are now in full agreement with the President and this business of taking a knee during the anthem is going to become old hat in a rather rapid manner. The lesson that should have been delivered by Goodell to Kaperdink the very first time he performed this stunt, will now be delivered to those who should know better... And if they fail to adhere they will be suspended and fined.
Sadly, this could have all been nipped in the bud if that had been done to Kaperdink in the first place... Who knows, he may have even still had a job if he had been suspended or fined for being a moron instead of being allowed to embarrass the NFL on a weekly basis. Now he will never work in the NFL again.
The kneeling was his way of dealing with defeat and getting back at the NFL.