From what I can tell, the issue with Wireguard is that the traffic is quite obvious. Other options might be blocked, but technically harder to implement said blocks.
Yeah, WG is by far the best way to do this kind of networking.
That’s quite fascinating, didn’t realize Wireguard could be blocked in that way (although the WG traffic is pretty obvious looking, so it makes sense). The only solution I know of without a need for a VPS is hosting everything on Tor. Wildly private and secure, but also wildly slow. Beyond that, there are a number of ways of using a VPS to similar effect, I know people have used Cloudflare Tunnel to similar effect in the past.
Also, there are apparently quite a number of wiregaurd derivatives which protect better against detection and blocking methods. amnezia and wstunnel are the two that came up. Likewise, you will need a VPS, and might even be able to set up a tailscale-like coordination server that way (maybe with headscale, or maybe with one of its competitors like NetBird).
ZeroTier might also get the job done, but I really don’t know much about it.
Hope this helps, and good lucks!
I don’t want to be a naysayer or Luddite (wait, who am I kidding?), but I hard disagree with that take. A space economy will get us nowhere. Yeah, sure, some interesting technology (arguably) came from the Apollo program, and NASA has done some amazing astronomy with JWST and Hubble. But, as with so many other aspects of modern life, the cost is far too great to society as a whole. The energy needed to get anything to or from orbit is enormous, and there is no way around that. The thing we need to curb climate change is reduction of energy usage in any form (driving, flying, electricity, ect.). This is even on top of other issues in rocketry like ozone layer depletion and the light pollution described above. As such, if climate change really is the greatest threat to humanity (which it is), putting anything into space is not a worthwhile venture.