The press loves to print stories about what was going on “the last time CO2 was this high.”
People who know how to think logically would recognize that very different conditions at equal levels of CO2, would indicate that CO2 is not the cause of those conditions – and is in fact unrelated. But superstitious people link together unrelated phenomena (like rabbit’s foot/good luck) and no amount of contrary evidence can sway them.
Five hundred years ago, bad weather was blamed on witches. Equally stupid and ignorant people now blame it on CO2.