There's no plausible argument from counterfactuals here.
But let's pretend anyway - do you not think that even if a more virulent strain of Covid did arrive, country with proven measures in place has a better chance of dealing with the problem than a country whose current response is a chaotic shambles?
The measure of success is all past and current. If Vietnam loses control over covid, then we can definitely blame them for that. Why? Because they effectively controlled it in the first place.
If they continue their direction, they will be one of the only countries on the planet, not totally infected. Pretty amazing really. If they start experimenting and doing things differently, at least they've setup the protocols for managing things correctly.
Here in the US, we go through these bullshit 'phases' where we go from phase 2 to phase 3 and then back to phase 2. Well, anyone with half a brain could have figured out that wasn't going to work. At least Vietnam is taking this seriously.
They shut their borders entirely... we (the US), can't even do that.
Faking what? Demanding what?