Earlier quoted context omitted.
But you can also try to get them to be Tailscale users and effortlessly share the devices with access control features they built. I share my home servers and game servers with family/friends easily while still keeping everything off the public internet.
But now your friends and family are locked into a proprietary system, subject to whatever the future incentives of Tailscale end up being. How many people can you connect on the free plan?
You can connect one person on a free plan, but each person can have their own free plan that you share devices between.