It looks like a kbin feature, not sure it exposes Lemmy activity

They may as well just remove the “Private” feature from Reddit since it’s against the CoC to use it at this point.

You deleted your account yes, but they are rolling back comment deletions which is what this post is about. If you delete your account, you’ll no longer be able to get eyes on what Reddit has restored of yours and they can quietly restore your content without your knowledge.

It’s a game of cat and mouse currently in regards to protecting what you’ve previously submitted to reddit.