Have you seen any scientific literature alleging this possibility in those who are not seriously ill? Not to sound like the WHO, but I have not personally come across any evidence that this is at all true. And indeed it seems highly non-credible.
> Also, while the the goal of flattening the curve was focused on lowering the impact on health care, as seen in Australia and New Zealand it can also result in stopping nearly all local transmission.
This is true, but now they can't let anyone into their country until the whole island has been vaccinated. That could get very tricky.
Well, I suppose they could do what Taiwan and other countries have done and aggressively test&quarantine all entrants. That's certainly possible.