I think this is out of context to some degree. The plan was 'shelter in place' ie if you get covid stay home. Just the same as if you get flu you stay home whilst the rest get on with life. ie no lockdowns, no masks, no restrictions, schools not closed etc etc.

This was the approach of the Great Barrington Declaration.

Boris then caved - as he does with most things, he wants to be popular all the time - but this just makes him stupid. Build Back Better, Net Zero, energy sanctions against Russia etc.

For me he is/was a great disappointment but on this matter he was actually right.