Let's have this discussion after ETH 2.0 is activated, to me it's never going to happen and Ethereum team will end up changing their mind for something else, PoW algorithm will forever be a thing in ETH ecosystem
We shouldn't live in denial, though. Do you think ETH devs and community will keep the POW algo despite all the scalability and transaction fee issues ETH network has had despite being only about 5 years old?
Personally, I don't think so. Much as I hate POS with passion, it's going to happen sooner or later on ETH network.