here's my opinion:
first part is about bitcoin, and explained very very well.
second part is about hashgraph, which I think is put in to the wrong light. Either Maloney is invested in it, or got sucked in by the hype, but there is NO way hashgraph is going to replace blockchain tech.
Let me quote Daniel Larimer:
smart contracts will not work with hashgraph, especially at their claimed throughput
so hashgraph will never be able to replace a fully fledged blockchain. ever.
Nice video, I wonder why smart contracts would not work on Hashgraph?