I wasn’t stating it as an excuse, Monica - simply a statement of fact.
As far as I could ever see, my neighbour’s reading was restricted to Hello! magazine, and any celebrity or fashion gossip in their sole newspaper - the Saturday Mail. I doubt that she ever watched much news or factual TV programmes, and now that she’s very frail and a bit muddled I dare say that applies even more, though the TV is on non-stop.
IMO there are plenty of similar types. A dd had a friend who only ever read celebrity/fashion gossip and never read or watched the news. She simply wasn’t interested. More than once dd was astounded by her ignorance of some major event that was all over the news.
So yes, you could call it culpable wilful ignorance, but it’s still a fact, and I dare say a reason why people of apparently normal/average intelligence, do still fall for scams.