Well you could say that, but without all of the detailed evidence to support such a conclusion, you'd be making a random unsubstantiated claim. A just as valid opinion would be that they took a calculated risk with peoples' lives and got away with it. Which IMO is a poor decision irrespective of the outcome, and incidentally also the view it would seem of nearly all other countries, if not all. And we're talking like they have got away with it. They haven't yet.
I would FAR rather that excessive measures proved unnecessary, than not enough measures resulted in countless extra deaths, and no more than an "oops sorry about that" to show for it.