True, but if you search around, you'll find post that says reddit reverting changes the user made, such as restoring a deleted comment, restoring a comment that have been edited, even going back to a 5 year post.
Now, cant verify is this true or not, because i already deleted my account. And i dont know if this is an after effect because reddit crashed after most of it subreddits went dark, and reddit tries to restore its dataase.
But I dont think we "own" our data when we gave it to Reddit or any other service providers. All we can hope is that, that Service Provider respect our request :)