I have a simple question, if I mistakenly post data such as my personal address, private key or any data that I later want to hide, and I contact @ and he delete it, will both sites comply with this deletion?
Well that's a fair question but let's suppose they both agree to delete ninjastic.space and loyce.club, How about other places? For example web.archive.org I don't think they will honor such requests.
To be honest you can't force LoyceV or TryNinja to do so, yeah you can request them and I'm sure they will listen but if they don't? Even theymos won't help you here :p