Not really, if you watched the whole video he mentions that there will be plenty of room for all sorts of different decentralized models.

His critique isn't really "an attack" like Dan says, he just points out the difference in how the protocol is structured. I think dan makes a good point about ETH nodes in it's current state, but also ignores that each pool is made of hundreds if not thousands of potential nodes. All that being said ETH moves towards POS it will be way more decentralized than DPOS as far as a node structure.