The effect you describe reminds me of reading Edward W. Said's "Orientalism" when I was younger. Fable suddenly started with this kind of lingo, iirc, and Opus 5 sounds exactly the same. Tin foil: it's ultimately a vendor lock-in strategy, you'll get the best results with agents from the same tribe, others will trip over the mountain of idiosyncratic metaphors.

> you'll get the best results with agents from the same tribe, others will trip over the mountain of idiosyncratic metaphors.

Good point, there's an anti-competitive incentive, and self-bias in models is a mechanism to do it.