> Economically relevant knowledge work is things that humans find cognitively demanding. Otherwise they wouldn't be valued in the first place.

Deep scientific discoveries are also cognitively demanding, but are not really valued (see the precarious work environment in academia).

Another point: a lot of work is rather valued in the first place because the work centers around being submissive/docile with regard to bullshit (see the phenomenon of bullshit jobs). You really know better, but you have to keep your mouth shut.