IDK what’s happened to you or why your post got removed.

Obviously “self-hosting” as a term is broad and subjective.

IMO this community discusses hosting services in an environment where you’re responsible for installing, configuring, and maintaining your own stuff.

A purist might argue that self-hosting doesn’t include services residing on a VPS, but what’s the point of excluding those discussions from this community? In practical terms the nature of the activity is the same.