I'm referring more to the suggestions of subreddit vandalism, brigading, mass vote manipulation, turning off automod. That's pointless, anything moderator hooliganism can be undone immediately.
Personal history is different. I nuked all my shit on the 12th. Edited and wiped with Redact before deleting each account, all I can do as far as I'm aware. I took measures to obfuscate my activity on reddit anyway, multiple accounts, never keep one longer than a year, if I'm giving a personal anecdote, the unimportant details will be wildly different and wrong every time I tell it, that sort of thing.
I make an effort to protect my anonymity on the internet in general. My personal post history on various websites definitely falls under my data which I will control as much as I possibly can.