[pjc50]

So this in practice is a massive push to centralization: if you have a Facebook page or Instagram account, you don't need to risk that level of privacy compromise.

[kuschku]

Nope, Facebook or Instagram pages used commercially are also required to have an imprint.

A freelancer's sites are also considered commercial use.

And such sites without imprint have been fined & taken down.

If you engage in commerce, you need to publish enough contact information that others could serve you a court summons.