This guy was also difficult to argue with. He was always professional, which I guess is worth something.

One time he tried to remove all the types from a bunch of code "because they were all going to change later." I refused to allow this. We went back and forth in the comments for hours. I think eventually the lead or boss got involved. Thankfully people sided with me.

His "later" project that was allegedly going to change all the things was rejected by the team. The code in question is still used and properly typed a year later.