Earlier quoted context omitted.
Yeah - I was going to keep my existing stuff up, but I think I'll clear out my account's previous posts and comments.
I deleted all the content on my main account. Most of it wasn't useful, but a couple of posts and threads ranked well on Google and I like to think that hurts the site just a little bit.
So I'd guess that reddit somehow restored some number of posts, and it seems to occasionally continue to do so.
In terms of hurting the site, it absolutely does. Reddit is a ghost town, and I find deleted posts constantly that google thinks are relevant. It's a shame it had to be this way.