Are you referring to how the nixpkgs-unstable branch hasn't been updated in the past five days? Or do you have some specific software in mind? (not arguing, just curious)

It’s a variety of different software that just isn’t updated very often.

I don’t mind being somewhat behind, but it seems like there are a lot of packages that don’t get regular updates. It’s okay to have packages that aren’t updated, but those packages should be clearly distinguishable.