While the author is being a bit of a tool, they're right about one thing: everybody who jumped the gun prior to the board announcement is now left with an ostrich-sized amount of egg on their face and no obvious path towards reconciliation other than eating a very large omelette. In particular, Jake and the Aux team don't have an obvious technical roadmap, which is a serious problem for a nixpkgs fork; also, I feel bad for Xe, who has left the community entirely and condemned themselves to pre-Nix distros. Pride leads to hubris leads to self-flagellating blogposts.
...I say, as I continue quietly working on my own reimplementation of Nix...
Check out their recent posts; they've been spending a lot of time trying to reconstruct their NixOS experience and finding it to be more work than they imagined.