Yes, I’ve found it very interesting. I think it’s fair to say that his long-term fasting correlates with his long-term performance gains, so the likelihood of him burning out due to the insane programme he’s challenged himself with this month is not related to the impact of fasting.
This video (warning this is vlog format) is long but interesting on the relationship between fasting and performance. Clearly works for him: https://www.youtube.com/watch?v=yPWRu_NjJ9E&t=81s