We can & should demand at least gateways if not at least a single alternative. Considering they have funding, they can self-host to actually control a forum or chat room as well as a code mirror (even if just HTTP with no forge). Folks are also undervaluing how some users are banned from access to these US-based platforms under US sanctions.

So? Not everything is packaged on all distros & you can benefit from sharing & reusing declarative configuration even if for specific scopes (meaning not just NixOS).

The pro-FOSS stance would be to get your communications off of being exclusively proprietary platforms. Developer & early adopter freedom & privacy matters—but instead they are choosing Discord & Microsoft GitHub as their only platforms.

Just use Nix. It can run all the packages on whatever platform. It has the largest repository of software & are some of the most up-to-date.