What hasn't changed is what Dominic Cummins said in his interview to Laura Kunesberg a few years back. He basically said there were only a minority of people in Whitehall that had any substance about them. When pushed on this he then said about 3 dozen, and supported his argument sharing that they are the only true subject matter experts on these really important policies that shape our country. They are the ones that bother to work with facts, read the policy documents and use quantitative and qualitative inputs to propose change.
That just reminded me of what a friend had told me about his time at TFL and his many meetings with Boris. As the big boss, the Mayor of London, Boris would turn up to incredibly important meetings late. He hadn't read anything that had been sent to him as pre-reading and he sat there most of the meetings just making people laugh. He'd just use gut instincts to support decisions that the TFL team were proposing.
So what do we do with empty shells like this in our country? Obviously, we make them PM, and we get the intelligent people like Cummins to coach them to say "35 New Hospitals" and "Get Brexit Done" knowing that lots of the members of the public are gullible and fall for the marketing campaign over the substance of the debate.
I used to take the mickey out of my US colleagues at work for having no intelligent politicians. I daren't now as our country has headed the same direction as US politics. They're mostly actors building their own personal brand.