You know I probably shouldn't bother wading into this, but in 20 years nobody is going to care about Kaep. While the league officially didn't do anything towards him, and multiple teams gave him a chance, there are worse QBs that got rostered while he was on the street, so yeah, it was unfair.

That being said, he statistically was a really mediocre QB. You can be as outspoken as you want if you are good, but if you're mediocre and you bring distractions (and while important, it was a distraction), you're not going to get hired in lots of industries.

IIRC, Kaep got a tryout by the Ravens and his girlfriend called the owner a plantation owner. That kind of stuff isn't going to fly, you can't just burn bridges. But teams like the Hawks (who seem progressive enough) declined having him as a backup, so maybe he wasn't good enough.

You can look it up yourself. His last two years in the league Kaep had a QBR of 43 and 49. Bortles, who nobody feels is great, had a QBR of 59 and 44 his last two years, in comparison. He's a backup level QB in a league with lots of backup level QBs.