In holding securities we will get the possibility to get the dividend, in staking POS coin we will get also the possibility to get crypto dividends. It sounds very similar. That guy has made the right point about that. This is big gambling by ethereum.
Im feeling curious why ethereum is not introducing its total supply rather than move it to the POS. Add more utility usage will be much better. ethereum will get the same rating as tezos in cryptorating council's site
https://www.cryptoratingcouncil.com/asset-ratings