Despite an immensely strong arm, he's wildly inaccurate. There were practically more balls ending in the bleachers at a Niners game than a Giants game.
He can't read a defense, pre- or post-snap.
Kap runs around in the pocket like Curly from The Three Stooges after the ball is snapped, juggling the ball shouting "WooWooWoo!".
Just about every third down under Kap would have been more profitable just kicking the ball away.
The last time Kap was a success was back when Peyton Manning was switching saddles from the Colts to the Broncos.
Kap would like to get paid a hundred zillion dollars like he did in San Francisco.
Not many teams willing to put up with a media circus of social justice protests. If Kap went to Dallas for instance, the fans would boo his head off when he took the field and laugh when he got sacked. Wait, they did that in liberal San Francisco too. Never mind this point.