I'm not going to read the "article" because it is a transcript and looks a bit rambly and I don't expect it to be talking about anything interesting. But just going to the headline here; consider the base rate. North America has huge per-capita wealth (by a bit of a margin over most other large players). It is expected that scammers would target them and make the most profit there.
But why less Europeans? A language barrier for some countries? More regulations about robocalls etc? GDPR and better privacy so our data isn't as easy to exploit?
I suppose in some sense we could jot that down as more regulations leading to less scamming.