Isn't crypto's intended purpose to eliminate the middleman? By requiring trust in a PoS system, you're bringing back centralized banking to crypto. Money talks, so don't expect this to change anytime soon.
Not all crypto are intended to eliminate the middleman, take a look with an obvious centralized coin e.g. XRP where they're supporting banks, USDT and other centralized stable coin where they're using fiat as a collateral. This is why if people hate of centralization and they choose to store their money in crypto to eliminate middleman, they need to be careful for not invest in a centralized coin.