Not like that. A server name that can be authenticated. Like when you receive an email from your bank (in the metadata), you know it’s legitimate. Each organization can set up their own server to host things they vouch for. With ActivityPub it can be viewed elsewhere with the guarantee that it’s from a trusted source.
True. I believe the celibacy thing is to prevent bishops from accruing wealth and leaving it to their sons. The church wanted the money. Similar to how Henry the 8th created the Anglican Church to get a divorce, plus all the church properties and tithes.
As usual, religious conflicts are based on earthly concerns.