There's also a social element here : communities around software matter, and I for one (being a EU developer, for reasons of professional ethics) cannot justify

There's also a social element here : communities around software matter, and I for one (being a EU developer, for reasons of professional ethics) cannot justify any more associating myself with the kind of developer that still thinks it's acceptable to use Github (especially for something as fundamental as Nix(OS) - and I'm pretty sad about Rust too) (at this point developers had enough time to migrate even the most complicated projects off of it).