Interest in developing and deploying nuclear power dramatically declined after Three Mile Island and the Chernobyl incidents. This lead to an increased reliance on carbon-based energy sources like Coal and Natural Gas, likely killing hundreds of thousands over the years.
I think skittish virologists rightly concluded that a lab-leak mea culpa would have a similar effect on virology and perhaps broader medical research. The author disagrees, but history has shown us what happens.
If Three Mile Island and Chernobyl had been covered up and left to conspiracies the earth would be several degrees cooler right now.