No comment on the personal drama, but in terms of the ideas, I'm inclined to agree with kyriacos more.

I think Alexander is misusing Nietzsche and Popper here. Nietzsche's view was very evolutionary. Our values aren't valuable in themselves, but are heuristics derived from increased probability of survival.

https://medium.com/incerto/how-to-be-rational-about-rationality-432e96dd4d1a

This is a relevant read, because Taleb was greatly influenced by both Nietzsche and Popper, and he claims that the meaning of life is survival.