I don’t think anyone is questioning your good work and clearly good intentions. Thank you for your contributions and for renaming it!
Some of those projects you list probably should also be renamed for the same reason, like nixpkgs-python and nixpkgs-ruby, and nixpkgs-mozilla.
Some of them seem okay to me since they are really tools that directly operate on nixpkgs like nixpkgs-review, nixpkgs-hammering, nixpkgs-monitor, and nixpkgs-update.
From what I understand nixpkgs-mozilla and nixpkgs-stackage have a top-level default.nix file which is an overlay. Thus, are meant to be used as an extension to Nixpkgs.
Others like nixpkgs-python and holo-nixpkgs are wrappers around Nixpkgs, as their default.nix import Nixpkgs. Note, both of these project provide an overlay, but this is not their default goal.
And nixpkgs-ruby is only a flake which defines the expressions for some Ruby interpreters.