Yes, but if you own a domain you guarantee that it is you. E.g. Will has multiple impersonators, but they can't verify using his domain jb55.com so you do actually know it's him. This level of verification is only important if you need to establish trust. I don't so the existence/ verification of my nip05 is unimportant and at times has been broken with no real effect on my or my mutuals experience.