The only reason Kaepernick is not getting hired is that he comes with way too much baggage. He has NFL level skills but his presence would disrupt any team
The only reason CK hasn’t been hired is that he doesn’t want to play pro football anymore. When the Ravens were considering signing him during training camp they tried to arrange a meeting with him because they weren’t convinced he really had any interest in playing. That meeting never took place because CK’s own girlfriend sabotaged it.