Eth miners can still mine ETH after the update it's just that the reward will be lower than what they are today but still ETH mining may remain the favourite even after the update, ETH PoW algorithm isn't going no where
He don´t mean EIP1559, he speak about ETH2.0 and this will have no PoW, but we see it in 2023 maybe.
I think they will still mine eth classic etc. even others that will start depending on what’s the next best mineable coin in terms of power/hash/profit/roi ratio when everything flows over to eth 2.0 PoS. New machines will come out and they will be able to mine algos like ravencoin etc. I think. There is going to be an gpu shortage for quite some time now I am guessing few years.
ETC discuss about a new PoW algo again -> keccak256
if this will happen -> ETC will die in my opinionAnd ASICs will be reconfigure for ETC, i think it is rather easy. But i dont think that the PoS will be the end of the GPU mining. We`ll see new coin, better than all others and forgot ETH.
This is why ETC discuss about a fork to keccak256. And i am sure not all ETH hashrate will go to other coins -> many miners will leave mining.
And true, gpu mining will not die -> to many other good projects are out there.