Finally finished deleting all my old comments and posts from my 12 year old account and hit that delete button. (Had to use old Reddit to get it to go through.) Feels good.
I did the same on 4 separate accounts I've been running the oldest was 10 years. I don't know why I didn't do that sooner. I emptied but left one account just in case I need to write something over there. It would take something pretty monumental for me to log in over there.