True it requires more coordination to be helpful. And tbh I think every household network should be going through and host a Tor relay so shrug but something to the effect of some minimal form of authentication that the person is a consenting adult that is given out at the discretion of the person would be useful for this case.
Not totally sure what the best way to do that is. Keys, cookies, OIDC from trusted party, block chain, DIDs (Decentralized Identifiers), or heuristics like IPs, or digital finger prints.