:: A person has to WANT to remain ignorant. ::
Or, you could chalk it up Stockholm Syndrome?
I really don’t know.... I know people who seem otherwise intelligent and informed, who still got vaxed. One relative and her husband because the other relatives refused to let her visit them without it. Other good friends because they feared they wouldn’t be able to fly to see g’children without it. These people are quite informed - maybe not quite as much (obsessed?) as I am - but very conservative (or whatever the best word is), voted for Trump, etcetc.