Well, I do believe two FDA officials resigned in protest saying there was no scientific evidence for the efficacy of a third dose, and that does sound like legitimate informed scientific dissent.

I think the claim that this 'third dose' was pushed through by pharmaceutical corporations and compliant government officials can't be so glibly dismissed, given such issues.

Of course, future data might support or undermine this view, but it's hardly 'anti-vax hysteria'. Our pharmaceutical system has a long history of this kind of thing, due to their mindless focus on profit margins with much less regard for the safety or efficacy of their products. Look up the Vioxx debacle, for example.