Would any hypothetical training data corpus even be sufficient to emulate Feynman? Could any AI have a sufficient grasp of the material being taught, have enough surety to avoid errors, mimic Feynman's writing+teaching style, and accomplish this feat in a reasonable budget and timeframe?

The example is obvious marketing hyperbole, of course, but it's just not going to happen beyond a superficial level unless we somehow create some kind of time-travelling panopticon. It's marred by lack of data (Feynman died in 1988), bad data (hagiographies of Feynman, this instance included), flawed assumptions (would Feynman even be an appropriate teaching assistant for everyone?), etc.

I wonder if AI fans keep doing this thing in hopes that the "wow factor" of having the greats being emulated by AI (Feynman, Bill Gates, Socrates, etc.) will paper over their fundamental insecurities about their investment in AI. Like, c'mon, this kind of thing is a bit silly https://www.youtube.com/watch?v=og2ehY5QXSc