I still crack up at the idea of 'personality prompting', mostly because the most engaging and delightful IRL persons who knock us off our guard in a non-threatening way are super natural and possess that "It Factor" that's impossible to articulate lol -- probably because it's multimodal with humans and voice/cadence/vocab/timing/delivery isn't 100% of the attraction.
That said, it's not like we have any better alternatives at the moment, but just something I think about when I try to digest a meaty personality prompt.