You wouldn't think that it is still possible to blame people who declined the vaccine, but the delusion is powerful and many people I've talked to who are vaccinated (which is nearly everyone I know), do not want to know any possible negative information regarding the vaccines because they can't undo their decision. So they try to avoid any info/conversations that would go against their previous decision and also seek out any data that bolsters their previous decision as being the right choice. If the side effects become even more common, I don't think people will be able to hide from the truth forever though.