That's just an interview but nothing about the trading strategy other than he was not the one behind the bulk of the math.
A watched that a few years ago. From memory all Simons says is 'We use Statistics and Machine learning' he doesnt give much away. And its not inconsistent with the previous video posted by wxytrader on this thread.
David E. Shaw of D.E. Shaw would in a Market Wizards interview not even share what they did not use as it could provide an advantage to his competitors by not allocating research resources towards a dead end.
Yes they are acting all smarmy, but I think they are throwing everyone a red herring, because they may have started out with a math based methodology, but in the end they just settled on simple pattern recognition combined with low fees and high frequency. Basically find a pattern, and then compare it with 100 other similar patterns and then extrapolate from that what anomalies were present in the outliers. This is similar to what Tudor did combined with EW, except with more data. I was surprised Tudor shared their technique...I think they said they regretted it and tried to have it removed from the documentary. Anyway all of this is baked into EW so you can save yourself all the quants. So in summary, the market is in a state of determinism, and if you want to make money you just have to align yourself with that pre-determined outcome. The market is not affected by the news or earnings reports or fundamentals etc. as those will only facilitate the already pre-determined outcome. I think Simon or someone giving a lecture said they used fractals and ignored all news and earnings reports. Case in point. In NOV2021 The extension wave for bitcoin was showing its 1.618 fib could take it down to 13-16k. This was forecastable in Nov2021 when we were just at ath's! This was more than a year prior to the FTX scandal that eventually became the icing on the cake for that capitulation. I'm sure other news aligned to facilitate the already pre-determined decline along the way.