I like to differentiate between ignorance and stupidity.

Ultimately it’s semantics because neither word is so precisely defined but this is what I mean:

Ignorance - a state of not knowing - can be fixed. The only thing you really need is an acknowledgement that you are ignorant on some matter, which should automatically lead to learning, because I believe it’s inherent in our nature.

Stupidity - a state of refusing knowledge, incl. the knowledge of your ignorance, and resisting learning opportunities.

According to that definition an alarmingly large number of people seem to be stupid these days. They even win elections.