I'm answering your questions as frankly as I can. The questions involve gov.uk, and so the answers involve gov.uk.
> gov.uk is a platform developed by the GDS, not simply a namespace.
From the outside it's difficult to make the distinction. I'm talking from the perspective of a user.
> Before, we had a pile of independent websites built and maintained by each Government department with no integrated search or organisation, a lot of duplicated technical effort as everyone had to maintain their own CMS, and an extremely poor user experience.
For the scope of gov.uk, I can appreciate how that's beneficial. The dynamic I've seen is there's a bad solution to something which isn't even a problem—as there are already better job sites around. If my premise is correct, then even if gov.uk solved the UX problem for Universal Jobmatch, it's still solving a problem which doesn't really need to be solved (a clone of a job website isn't very valuable). And that government fixes problems which it creates, and then pats itself on the back. What I've said goes outside of the specific points I've been making, but that's how I see the context.
I'm not even anti-government, necessarily. I'm still making my mind up. Maybe the need for inequality is more important than efficiency and maximum wealth? Some of the things governments do are egregious; but so are some of the things individuals do. Knowing the answer wouldn't be of much benefit, anyway: the government isn't going anywhere any time soon, regardless!