I didn't get that sense from the prose; it didn't have the usual LLM hallmarks to me, though I'm not enough of an expert in the space to pick up on inaccuracies/hallucinations.

The "TRAINING" visualization does seem synthetic though, the graph is a bit too "perfect" and it's odd that the generated names don't update for every step.

For me it was the prose that alarmed me. Short sentences, aggressive punctuation, desperately trying to keep you engaged. It is totally possible to ask the model to choose a different style - I think that's either the default or corresponds to tastes of the content creators