Thanks for actually reading what I wrote. Many people read a little and make up the rest or make up something to replace what was written. I mean yeah, he deserves way more than 20% of the blame for pretending like he wanted to learn, however my manager bears a lot of blame for the situation overall because he should have reprimanded him then fired him after a couple months if he didn't improve. Instead, my teammates and I spent hours and hours ripping this guy's PRs to shreds and trying to teach him shit and it never went anywhere. I remember one PR had over 90 comments on it! He routinely broke the build, usually in the same ways as before. I spent so much time pointing out the same mistakes over and over.

If he'd been fired, that timesuck would've been minimized and actually there's some small possibility he would've gotten better if he thought he couldn't get away with coasting like he did. But since his incompetence went uncontested for two years by management, he wasted tons of everyone's time. If it were up to me he would've been gone before three months.