Tons of accounts were just banned recently for plagiarism found in very old posts so their is definitely precedent. Accounts getting banned from old posts linking adresses to prove ban evasion are also frequent..
Also as you mentioned, if you piss someone off sometimes they will dig your post history for any dirt they can find to use against you..
20. Then more weaponizing of gamed metrics like deleted post count. Theymos says CH you will be banned soon because you have a lot of deleted posts.
21 What happens next? someone goes and reports every single short post 2 words or whatever in CH entire history LOL
It happens.. It's probably happened to me too..
It seems to me that the general community considers this sort of post digging to be fair game so keep that in mind..
Did you piss off anyone good recently? About how many old posts did you have deleted total?