Maybe just me, but I think if he stepped down today, just walked away and left an empty chair, there wouldn't be many willing to sit in it . . . at least not until some other poor sod had sorted out (fat chance) all of the current issues we're seeing with Covid, the NHS, Immigrants, blah blah . .
Having said that, there are probably still a few nutcases out there that think they have the answers . . and the backing