This reminds me lots of when Facebook started applying warnings/bans/etc retroactively to content without any context. I remember getting several wrist slaps in the same month for content I had shared a decade prior that really wasn't all that bad. But Facebook decided it was a problem and made me question what I was allowed to post in the future. It didn't take long after that for me to stop using Facebook completely.

[–] Ledericas@lemm.ee 1 points 1 day ago

and reddit is copying the same methods, retroactively banning people, additionally any old acct with comments that are also old can be reported by other users still.