Being skeptical of a hypothetical like that is fine. Once the vaccine came out and was shown to be efficacious, they updated their opinions with the data. This is exactly the manner in which one would hope, and indeed expect, their political leaders to behave. To do otherwise is pure reality-denying insanity.

I was also very skeptical of the speed at which a vaccine could be created and rolled out. But, once it was rolled out and it was shown to be reasonably safe, certainly far safer than actually getting COVID, I went and got the jab. These are not hypocritical or diametrically opposed viewpoints and actions. They are the behaviors of someone living in reality, with all of the uncertainty that entails.