The Nixpkgs Core team was established in Sept 2025 (https://discourse.nixos.org/t/establishing-the-nixpkgs-core-...), so it is a fairly new concept and idea. They've accomplished some good things as highlighted in the post, but are now stepping down. Yes, we'd prefer for the team to exist, but we've also functioned without one for ~20 years. It may take multiple iterations to bootstrap the concept and to figure out the right structure - or we may find it isn't needed. So no, this is not a critical emergency. It's a return to the status quo of late last year.
That being said, I think it is still a concept worth pursuing.
That being said, I think it is still a concept worth pursuing.