Eric Davis, the other 49er who was kneeling with Kaepernick, successfully appealed to the NFL and continued to play football. It’s not about politics.
Plain and simple – Kaepernick is an idiot.
He was riding pine when he started kneeling because he sucked then. He hasn't played since so there's absolutely zero chance he got any better.
He's delusional, but he's been that for a long time.