First, Kaep, specifically protested against Law Enforcement. That was embraced as a black thing on the Left and rebuked as an unpatriotic thing on the Right. So the whole thing fit in with the themes of the election and got tons of media attention. Just the same, there are a lot of felons playing in the NFL and Kaep's crimes did not approach dog fighting, child abuse, or, well, shooting himself with an unregistered gun. Ray Lewis has a statue outside M&T Bank Stadium. Kaep's problem is that he was not good enough to overcome the loss of goodwill of the fans. Had this just been a Kaep thing or a 49'ers thing, he would probably have found work in the NFL, but he earned the contempt of a lot of fans and what team wants to bring in a player who will be booed at home games? Icing on the cake is that he is costing the league a lot of money every week. He is not taking a knee now, but this was not a problem until he did.
Going back to the original question, the answer is almost certainly no.