Cyder
Justin
Seems to be the biggest one going aside from the silly hating of the kneeling thing.
No one wants a back up that's a distraction. Tebow had that going on although he wasn't the QB Kaep is. Throw in his unstable racist girlfriend who is liable to say or tweet anything and why bother? He also is not longer than young and no one plays the offense he excelled in. Many also believe he was creation of Harbaugh. I'm sure Harbaugh was a plus with him buy Kaep wasn't horrible when he played last year.
The exception I keep bringing up is Houston. There he could make a difference if the kid gets hurt or slumps