The PoS option was to highlight that power consumption doesn’t have to be an issue. Of course, PoS has its own issues.
The network can use any other type of proof, like Proof of Authority where only a buch of validators owned by the banking system can process the transactions. The network can be even tokenless, no profit or incentives from it, just the secure architecture.
PoS centralizes the authority to whoever is richest. That’s literally worse than how paper currency with semi corrupt government works.
The PoS option was to highlight that power consumption doesn’t have to be an issue. Of course, PoS has its own issues.
The network can use any other type of proof, like Proof of Authority where only a buch of validators owned by the banking system can process the transactions. The network can be even tokenless, no profit or incentives from it, just the secure architecture.