I laugh when they mention corporate not caring. They care a lot, about their profits and bonus, vaccinated staff have better productivity, vaccinated public have no travel restrictions and spread less disease to staff, resulting in more productivity and more profit. Anyone who thinks the corporates want the skies closed for some weird reason is way past recoverable. If vaccinations cause health problems, taht results in less productivity, planes could be in danger, resulting in regulatory pressure and insurance premiums lifting, all of which against what they would want. Aviation facilitates profits of other businesses. The only people that want non vaccination are extremists and anarchists, who revel in creating confusion. Which in the minds of the stupid herd they are winning quite 'convincingly'. Its easier to understand an extreme eco warrior would want to promote anti vaccination to keep everyone locked down and afraid of moving around, same as right wing groups wanting to build up dissent, so they can take advantage of the angry stupid for anarchy and power shift.