A common feature of this period is that many of the trends that were visible before the pandemic have been exacerbated during it. That's true with Johnson as well. Everyone knew he was dishonest and workshy before all of this. Evidence was ample from his journalism days all the way through to his shambolic time as foreign secretary. This pandemic has merely emphasized what an awful leader he is. It's utterly staggering that anyone thought any different tbh.
You would hope this would be a salient lesson for anyone taken in by the grand promises of populists, because their appeal only exists as long as they don't actually have to deliver on their promises. Now is all about delivery and actually doing stuff, and he's bloody awful. Contrast him to a leader who is weak on bluster and big on delivery, such as Merkel, and witness the difference. I know who I'd rather have right now and it's not that self-entitled twazzock.