[DaBarrington]

At least when it comes to Discord(and Reddit actually), there are scripts that you can run that deletes all of your activity/posts/etc from the server. I am pretty certain that Reddit still maintains hidden logs of everything you do even if you have deleted everything from your profile, but at least this way it will hopefully be much harder for people to get into that info. As for Discord, I have no idea if they keep logs of everything you do but I would assume that is the case. On second thought, in the past I have had Discord server mods yell at me for things I'd posted but also deleted, so there is definitely still a record of your activities to some extent.

[BeFlatXIII]

Reddit may not need the hidden log, but plenty of Reddit scrapers will keep the text regardless of whether it is deleted at the source.