Headscale is an open source implementation of the Tailscale control server.
Not an endorsement as I haven’t used it (I do use Tailscale), but just thought I’d point it out.
No updates for consumer versions of Win10. Including security ones. If on October 15th a zero-day exploit is out in the wild, Microsoft would not be obligated to patch it.
You said no updates for the consumer version, but there will be optional paid extended support available for consumer users who opt to pay for updates for a year.