The comparison is a category error because ETH is not decentralized.

A famous example of a category error is when Warren Buffett discredits Gold because it doesn't produce a yield like e.g. farmland does. He is comparing two things that are not in the same category (Gold is a form of money, not a form of income producing asset).

Since ETH is not decentralized it cannot ultimately become a government-hard money. It is not in the same category as Bitcoin, and afaik no other cryptocurrency is either.