The issue has more to do with Nix poor onboarding, dreadful documentation and difficulty articulating its value proposition.

I personally think that the idea of Nix is fine but the execution is not there.

Look even Bazel which is built on fairly similar concepts but only targets built where it makes more sense and has a far better configuration language still struggle with adoption. It’s clear that Nix which wants to make immutable something people actually mostly never tinker will have to fight an uphill battle.

This is one of my main gripes with Nix. When something it's hard or unintuitive it's not Nix's fault, it's a skill issue on your part because you just "don't get it". It gets tiring quick.

Saying it's a skill issue just shows lack of imagination and ambition to make it better.