NixOS is not suited for general workstations, to even get a semblance of rationality for general use you would need to develop the underlying infrastructure which you are not going to get from a government unless they are diehard sponsoring it (spoiler alert, in the current climate, pretty much as nil as it can get).
Pretty stupid choice of action - seems to be a more nationalistic play than a rationale one (the creator and the Foundation are based in the Netherlands which is what they are referring to).