Ethereum is never going to die, if there is any token that will always stand the test of time that will surely be ethereum. ETH 2.0 is around the corner which I believe will solve the problem of high gas fee. To think that ethereum will die because of high gas fee is totally out of point, that will never happen.
That's right, they already have a solution to their current problem and I also believe that ethereum 2.0 will bring a lot of big changes that will benefit many parties. so it's almost impossible to die as long as there is great progress.