I still send the newbies / non-academically-inclined to his Hidden Secrets of Money series (minus the last one on HBAR) because it's truly excellent (and simple). But I pretty much stopped paying attention to him after the HBAR stuff.
Discussion
He liked HBAR for the (admittedly insanely fast) transaction speed, but threw out decentralization to get it. I don't know what other coins he was into...