Apparently, the Zelda Minish Cap decomp is almost done. There are even some interesting discoveries like how the game actually uses 3D hitboxes despite being entirely in 2D.
https://zelda64.dev/games/tmc#have-you-found-out-anything-interesting
As far as seasteading projects or startup societies in general go, Atlas Island seems to be the most promising only because their site doesn't include any third-party scripts.
They have a Telegram but they mostly communicate via email.