I said “with hindsight”; my views have changed over the last year as the utter inadequacy and the huge human costs of a suppression strategy have become apparent. I also notice that those countries that have made it work have done so with political leadership that has been willing to say what they’re doing and why.
However, when a virus can cause 100,000 deaths in less than a year, put 40,000 people in hospital, and still leave no more than about 10% of the population with any immunity, the choices are pretty poor.
I was not advocating closing borders to all trade, as plenty of trade crosses borders without relying on lorry drivers to take it there.
Rather, I was acknowledging that a policy reliant on social distancing and lockdowns to suppress the spread of a disease is doomed to undergo repetition if the goal is suppression - the reservoir of disease remains, and is able to regain traction. That leaves either elimination or natural herd immunity, and I consider a strategy of natural herd immunity by far the worse of the two.