It's true. Alternatives like Proof of Stake, Delegated Proof of Stake, Proof of Importance, etc., try to fix the energy waste problem. They follow similar reaso

It's true. Alternatives like Proof of Stake, Delegated Proof of Stake, Proof of Importance, etc., try to fix the energy waste problem. They follow similar reasoning to Proof of Work, using financial incentives to keep miners honest. They don't require centralized authorities. However it's early days for Proof of Stake, we'll see how it develops.