Yes, I get that they may want verification with government ID... but unless they do it at a firmware level, anything above a FOSS Linux kernel on my own unlocked hardware, is fully under my control.
So far, it sounds to me like "age verif theatre" as applied to single user "jailbroken" systems. If they added this on a locked down Android system, as a requirement for network access (note: this is an actual proposal being floated around) then that would be of some concern... but systemd? 🤨