Ethereum tries to be.
It sure tries to be, but is nowhere near as of now in my opinion. One significant reason being Vitalik still having so much influence.
Why would we need an app which cannot be stopped? If it somehow is offensive to powerful people. Nobody knows that can be done with ethereum... what kind of projects should be done there. But the potential is enormous.
Because why even bother with a "dapp" if it can be stopped in the first place? One of the main selling points of crypto is that it
should be very hard to be stopped. But yea, I'm not not saying that Ethereum doesn't have potential.
Another thing is, Bitcoin isn't too decentralized at all to be called as one and has also become a medium of centralized institutions like exchanges.
Yeaa.. Bitcoin not being too decentralized because of centralized exchanges doesn't make that much sense.