Unless someone has stood for election to leader of a major political party, whether they could do better is irrelevant. It's like asking if we could do better than a nurse at nursing or a teacher at teaching.
It's not a national pastime to 'Boris bash'. It has become more and more the case that people have so much about his leadership about which to complain, which is not at all the same thing. 'Bashing' sounds as though people who have a useless leader (as decided by his own party!) have no right to say so, and are mindlessly criticising. We are not. We are saying that at a time of (government declared) National Emergency we should expect the PM to lead the government in making policy decisions about how to deal with it. Yes, he will be briefed by the experts so despised by the Tories until they needed them to 'deliver the vaccination programme' for which they take credit, but ultimately policy decisions are at least nominally in Johnson's hands, and he needs to be at meetings if he is to make them with any degree of competence.