You should have locked the thread before the inevitable was going to happen
We don't lock threads to stop idiots posting, we just ban them and let those who want to make sensible contributions do so. His repeated trivial post reports was going to get him banned anyway despite the advice he was given by PM.
The reason this ↓ rule was brought in was to stop people like you making this sort of comment when you have no idea of the facts.
32 Wannabe Mods and/or not heeding mods/admins warnings will result in a ban.
You fall foul of the first part, him the second.