It certainly undermines the "Check out how rational I am" veneer this person is peddling. I also don't understand the overall argument - is the anger that someone out there thinks they're more protected via vaccine than they are? The message that I think most lay people that are pro-vaccine have in their heads, at least those in my social circle, is merely that they help. They reduce the risk of infection and if you get infected they reduce the chance of hospitalization/death. Those things are true. But the gp commenter seems to want to frame the pro-vaccine as being duped idiots. That's not accurate. Their comments have the energy of "Vaccines work, but not the way you think, so vaccination efforts are unnecessary" without saying it outright.