Several of us on here, and I include myself with this, were preparing mid Jan and late Jan for covid. And warning others of what was likely to come.
But it was not the mainstream view. The only reason why the lockdown "worked" is because people bought into it. And the majority only realised the seriousness of the situation when they saw scenes from Italy. Even NZ that is getting a lot of praise for "acting early" locked down one day later than the UK.
I am almost convinced DC now believes in what he is saying but it is his version of the world highly skewed by the benefit of hindsight and the desire for "revenge".