I don’t know that you could ever remove posts or comments from Reddit either. I think it’s safer to describe it as making a comment public or not. I’m assuming that Reddit itself keeps records of all deleted posts. It’s best to treat everything you post online as public and permanent. I honestly think reddits ability to edit comments was a problem. I’ve seen so many arguments where people go back and change previous posts so now the arguments don’t make sense or to make the person responding to them look like an asshole.