British Etonian, PPE degree qualified politicians are incredibly skilled at one thing. Appearing to look like they know what they're doing, and know what they're talking about. Eton and Oxbridge do a wonderful thing of training you to be a fearsome debater. But that's all they're good at. When it comes to handling tough issues, climate change, industrial policy, Covid-19, they have an incredibly narrow, low resolution, and non-technical grasp of all the complexities and variables at hand.
It's a similar situation in British businesses. Even technically intensive organisations, like automobile, aerospace, defence tech, formula-1, etc, are often managed by people with MBA's, instead of technical backgrounds. Whereas in Germany, CEO's and senior managment of a similar organisation, from Mittelstadt's to VW group, tend to be composed of people with technical PhD's. This is partially why German businesses are much more robust than the pathetic cranky pussy of British industry.
Compare and contrast to the composition of the Chinese politburo, probably the most technocratic and pragmatic political entity on earth. A large majority of politburo members have technical backgrounds in STEM. No wonder they are able to execute planning, industrial, infrastructural, scientific developments, or even pandemic managment of their nation so successfully. Because they know what they're doing.