I wonder if this could constitute a violationiof article 6 of the UN declaration of human rights.

It has been established that national identifiers are protected by it, and a domain works as a sort of international identifier, in this case a personal one.

No one is obligated to give you a domain, but by contracting an obligation to provide that identifier until 2040, they would at least be liable for those damages, but there's an argument that depriving you of an identifier already granted is a more fundamental violation of a right to a name, an identifier and recordkeeping of them.