Thank you @ipeverywhere for succinctly expressing the information it has taken me many hours to decode.
It would be difficult for me to express my frustration with the process without seeming very irate. As it is I’ve decided to go back to ignoring ARC despite having provided a fairly complete description of how to implement tailscale last October.
In fact @connor sent 12 people to that thread for advice on how to circumvent CGNAT issues, so I was a little bit surprised by his boilerplate reply.