I'm really tired and maybe I'm already dreaming, but for the case I don't: WTF guys?

Nvidia doesn't hate linux, it just don't care and the linux community hates nvidia

1. Code in Emacs
2. Create a Nix Flake for building my Environment
3. Build with whatever buildsystem the language requires, often Stack or Cargo
4. Package for nixpkgs

Yep.

We would need to have way more information when we should say you why. But my first guess would be that you're only using one core.

He sounds like a bitter, stagnant, arrogant old man.

This guy is absolute cringe

Yes, ++. Emacs is by far the App I use the most. While my system runs, I never close it. I live in it.