The Lex Fridman interview had a lot of good info, but not really any stuff that isn't public knowledge. Still, it's good to hear them all collated in one place. I think the biggest takeaway is IMO the revelation of the America's overarching strategy. They all know that at the current rate, China will overtake the US in the last frontier, semiconductors, within the next 10 years or so. Their ONLY hope of remaining on top is to achieve AGI first, which will hopefully done with a big enough of a lead and result in an exponential increase in American tech that allows them to stay ahead.
From that standpoint, everything the US is doing makes sense. They don't care about sanctions making China developing faster, they don't care about neglecting other realms of tech (e.g. biotech, renewables, etc.), they just need to slow down Chinese progress in AI enough using their only advantage which is compute until they get to AGI first. The tech bros really believe that this can be done, that it can happen within the next 2-3 years, and that it'll be so powerful as to render all other tech irrelevant immediately upon its completion.