ethereum will never die forever because Ethereum is the best Platform of all time. we can see from the various developments made by Vitalik Buterin and the team. so don't be narrow-minded about the developments that are being made. don't just because of high transaction fees some time ago you say ethereum will die. this is a totally wrong opinion.
Those who say Ethereum will die are newbies who don't know Ethereum well and they don't even know about the ongoing developments on Ethereum, it seems that including the London Hardfork they also don't know, even though Ethereum always gives the best at the very right moment.