PoS is flawed by design. Not only it enriches whales, but it makes the Blockchain more centralized.
That is true. Flaw by design because it can be manipulated by huge staking weights that is proven with small blockchain networks. If we naively assume Ethereum network just too big to be hardly controlled by huge stakers, that is not correct.
All of the buzz surrounding PoS is the energy-efficiency compared to PoW. But the latter can also be energy-efficient if miners rely on renewable energy sources.
Please take into account that over time, new generations of ASICs are more effectively and beneficially in energy consumption and hashrate it can produce. In addition, with time, miners have gradually switched to new electricity resources and they aim at cheaper as well as more environmental friendly, renewable resources.
Anyway, take this discussion to look back at what satoshi wrote 12 years ago.
Right. Otherwise we couldn't have a finite limit of 21 million coins, because there would always need to be some minimum reward for generating. In a few decades when the reward gets too small, the transaction fee will become the main compensation for nodes. I'm sure that in 20 years there will either be very large transaction volume or no volume.
The Proof of Work algorithm and the finite total supply of Bitcoin has pros and cons. It will not have an ending in between great success and failure. Just ends in one way or another. If Bitcoin price can keep jumping into another high level after each halving, miners will keep mining because they will still have profit. That in turn will make the Bitcoin network becomes bigger and bigger as we have been witnessing last 13 years. Else, miners will abandon and Bitcoin network will become less secure and even a dead one.
I know about difficulty retarget after each 2016 blocks but what satoshi wrote is true.