If you’re so paranoid of your relatives, maybe cut contact or get some therapy

Not when you’ve agreed to a terms of service that hands over ownership of your content to Stack Overflow, leaving you merely licensed to use your own content.

The domain is pretty important to Lemmy. If you lose control of it, your instance is effectively dead since the federation will not recognize your traffic until you get the domain back. There’s no way to change the domain of an instance so you’d have to start from scratch.