I found the last paragraph-sentence impossible to understand. I may just be not thinking straight, but it could be made clearer, and I'm posting about my confusion because I'm sure there'll be others who are also confused.

"actually does have a certain number of exemplars in real life" refers to the "honest people not being good at lying" theory, plus the risk of huge blow-ups from end of lies.

"though obvious selective reporting is at work in our hearing about this one" clearly refers to this sensational case of someone who was mostly good at lying, but left an entangled trace... Einfeld turned out to be a dishonest person (who was remarkably successful at lying, for a long time), so I'm not sure how that relates. The use of "though" was the first thing that confused me, but then I realised that the whole paragraph confuses me.