Because we are living this we don't realise how bad he is. He didn't believe in brexit but decided to try and be the face of the 'leave' campaign, shat himself and ran away when they won, bided his time and stuck the knife into everyone to get his ambition of being PM then did exactly the same as the people he screwed over, filled the cabinet with no-marks and inept failures, ran away again again after the election & went on lots of holidays, completely failed the country with his coronavirus response and is now in hiding again- all the while taking the UK to its most divided state in generations with everybody hating each other, eugenics experts calling the shots and people like Hancock, Patel and Raab running the show by lying to the country on a daily basis. I saw this morning we are 'importing' hundreds of Eastern Europeans to work on farms- really taking back control.
He is an utter, unqualified, dangerous disaster and when we look back in 20/30 yrs it will be obvious just how shit and catastrophic the 'Johnson era' was.