> He was of the opinion that the best thing for the UK economy was Brexit
I don't want to start another Brexit debate or even take position on it. However I'd like to point out that the key with Brexit is the plan on what to do afterwards and that is what has been completely lacking.
Whatever one's opinion of Cummings, he did put forward a plan and that plan was never attempted (probably too bold, shall we say, for politicians to touch it). I am not commenting on whether that would have worked or not, but at least he put forward a plan and strategy. On the other hand, Bojo's "plan" for Brexit seemed to have been limited to becoming PM...
I would say “could not possibly be implemented” rather than “bold”.
Anyone can propose a brave or bold course of action. It’s very rare these people have any idea how to actually execute their plans.