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 23 hours 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.