I think as an experiment in right wing populist rhetoric, it's failed pretty badly.
The Johnson/trump comparisons don't really work imo. They're very different people, and their relationship with the populist base is also very different - trump is a latter day messiah to those qanon people in a way Johnson just isn't for their equivalent here.
What's happened here is that Johnson has managed to hitch his wagon to the most widely loathed people in the country, the people who've spent the last year assaulting NHS workers, mobbing vaccine centres, chasing down journalists and the like. They are universally loathed by everyone who isn't them, and the only political capital available from them is to politicians who oppose them. Why anyone would invoke them any other way is beyond me, its an obviously losing tactic.