Because they their base emotions are easily preyed upon
FEAR - OMG We are Gonna Die (CoronaVirus, GlobalWarming, PopulationBomb, etc)
PRIDE - Leveraging Racism against each other (CRT, BLM), LGBTQ+
GREED - Eat the Rich
AVARICE - Get Free stuff from the Gov....
I could go on for days....
That “free stuff” part is what made the scam work. I said from the gitgo that if ceebug shots cost 20 bucks each there wouldn’t be any real following. That’s how it works with flu shots——not many takers when they have to pay-—anything.