I think it speaks to a general lack of critical thinking skills. Formally educated liberals like to say, "those uneducated conservatives!" but, at least in the US, most of them are barely any better at critical thinking and don't spend the energy to do it because they weren't taught that at school. Much less to be on the lookout for harmful ideologies that basically function as replacements for religion among many in the "well-educated" population. (Full disclosure I'm liberal and "well-educated" lol.)