It's bad policy. But it's important to get the analysis right: the choice here isn't between a very safe vaccine and an unvaccinated world population facing a pandemic to completion (which matches "the potential to kill millions").
It's between "continued rapid vaccination with all three approved US vaccines" and "somewhat delayed vaccination with one of the three approved US vaccines". That's not remotely a million-person delta, though the number is surely much higher than the 1/1M case rate on these blood clots.
Honestly the worst effect isn't with the vaccinations per se, it's the potential that this may delay vaccine acceptance rates among people sitting on the edge, due simply to fear.
It's between "continued rapid vaccination with all three approved US vaccines" and "somewhat delayed vaccination with one of the three approved US vaccines". That's not remotely a million-person delta, though the number is surely much higher than the 1/1M case rate on these blood clots.
Honestly the worst effect isn't with the vaccinations per se, it's the potential that this may delay vaccine acceptance rates among people sitting on the edge, due simply to fear.