Heart of Stone is so good and very short. Why is she skipping it?

Hi! I was an idiot and used the same usernames for everything. The good news is that I can change the usernames or get rid of most of them. Bad news is the one account I can't change is my old reddit. Even if I get rid of everything there's one post that isn't mine that uses the username. And some asshole can just look up the username in an archive somewhere and find real info about me. I used the account in high school. I don't know what to do about it.

Any other advice about reddit and opsec would be very helpful.