If someone discovers a free, unlimited energy source, launching a 51% attack would be just a matter of seconds. And that is exactly what has happened.
Bitcoin mining relies only on electrical energy sorce, there can be free energy sorcees but these energies have to be converted to electrical which will take processes that will require money.
With the right resources, anyone can easily utilize this unlimited energy to launch a 51% attack on the Bitcoin network. The cost of launching such attack would be incredibly low.
You are completely wrong, bitcoin blockchain is the strongest and now obvious in a way it is not vulnerable to 51% attack and the hashes generated is still increasing and making the blockchain stronger.
PoW is a failure. PoS is a better system. With Ethereum 2.0, Ethereum is slowing moving to PoS. The threat of someone having massive amount of electrical power is eliminated in a PoS system. As soon as the news breaks out, Bitcoin price will plummet. PoS and Ethereum 2.0 is the future.
You have no point to proof and you know nothing about 51% attack. Are you comparing Ethereum 2.0 to bitcoin PoW, bitcoin blockchain is much more and more stronger than ethereum blockchain. PoS is proof of stupidity.