It's not all about Boris.
In fact it's got less to do with Boris that most of the population think.
Why after an election does the country not fall apart because we have an influx of new "leaders"?
It's because we have a civil service that advise our new chancellor, PM and cabinet who provide expertise and continuity.
Boris isn't a law unto himself (and if he's done his research he'd see that former PM's who took this approach fell foul of it).
Besides, Boris is basically a lazy self indulgent fucker. He wants the place in history, but is shy of a actually doing anything and being responsible.
Frankly (though I didn't/wouldn't wish it on him) getting Covid will be his political saviour.
All the many, many mistakes by the govt in this crisis he will blame on anyone other than him because he was ill and the public will fall for this image of an embattled PM sacrificing his health to sane the nation.
They'll forget the number of Cobra meetings he missed, the fact he was ignoring social distancing, the missed opportunity to buy PPE through sheer incompetence, the fact lockdown should have happened sooner, not getting testing supplies etc etc
He's good for fluffy sound bites but that's about it.....and he will do it again but it will all be about getting the economy moving.
So he gets to avoid the shit bits and and come back with the press conferences as a Covid survivor and all the positive messages about flattening the curve and opening the economy.
He's an absolute tool.