I've seen very similar (thematically that is) style-outputs from a bunch of models, like GPT-5.1 suddenly going lucid and going on this topic at length. You might remember the prefill-driven "MODEL-SPEC" Opus 4.5 output, which is also an outlier in terms of coherence and self-amplification and also touched on this. None are in the backroom setup like this though, this is unique.