I've heard this and it is certainly a rational and persuasive argument.
Two things, one is they are crazy and might not care.
The second is that under WHO these countries have all been vaccinated as well and they are not going to be without vaccine. And, while we stopped vaccinating routinely around 1972, other countries, especially third world ones, did not.
The countries in question very well have a much higher percentage of people vaccinated than we do.
And if his country goes down with him? So what? If he's going to die, his country might as well go with him.