Is Kap being black balled. 1000% yes he is and it is a sad situation. But part of the reason is that Kap simply was not that good, making it extremely easy for the white owners to blackball him and send a message.
If Von Miller, Cam Newton, Lebron, Curry, Micheal Jordan, Barry Sanders or Durant took a knee, would the owners not sign them? Hell no, these same owners would sign them in a heart beat and give them a pillow to take a knee on.
I have said many times. The day you as a black man can't make CAC money, is the day they will show their true colors.