“So why were scammers still sending such obviously dubious emails? In 2012, researcher Cormac Herley offered an answer: It weeded out all but the most gullible.”

Link. I’m sure this has occurred to many of us (it did to me), but it’s weird that it’s still not widely understood. Current tech favors predation on the cognitively impaired but LLMs open new markets for more sophisticated attacks. (Cognitive scientists theorize human cognition was driven by deception use and detection.)