For whatever we might think about Boris Johnson, the inquiry shows that he was one of the lone voices arguing against lockdown, and lots of people have commented that during the "briefings" (which I refused to watch), his body language shows that he clearly didn't believe the words he was reciting at all. It shows that the prime minister is certainly not the one who was really calling the shots (see also "Yes, Minister"); and that although he didn't believe in lockdown, he eventually embraced it for his own selfish ends when he realised that he would be liked for it. Lots of "conspiracy theorists" have speculated that while he was in hospital, the heavy mob went and had a word with him, to tell him "this is where your loyalties lie". When he said "we will do whatever it takes to beat the virus", this became "we will lock down until we have zero covid".
For many reasons besides this, it's a real tragedy that he was in government, rather than opposition. In opposition, he might have been a very effective force against lockdown, with his brazen ways of saying things outside the official script. In a way, it's much easier for the leader of the opposition to speak his mind than it is for the Prime Minister. He would probably have argued vociferously that lockdowns would certainly cause much more harm than good, and people might have believed him, because they loved him so.
And the U-turn on masks. At first, no less an authority than the Health Secretary was saying they were useless, and maybe even counter-productive. Then suddenly, we were ordered to wear them. How convenient that it then became so easy to tell who "believed" in restrictions, and who didn't. It's been reported that Boris Johnson was "nudged" into wearing a mask, by being shown pictures of world leaders wearing them, followed by a picture of himself not wearing one. It's also been reported that even some of the "scientists" have admitted that lots was made up on the spot, such as the figure of two metres. Ditto "you are only allowed out for an hour a day". Utter bullshit, but everyone believed it. All those at the top were caught up in a creed of "we must be seen to be doing something, no matter how much damage it causes."