The problem of high gas fees has been around for a long time, due. And ethereum dev has no solution to this problem. Currently the ethereum gas fee is down, but I think this is due to traffic problems on the ethereum network not being busy, if it's busy again the gas fee will rise again. Currently, many have switched to Solana and BSC
Your post made me remember eth2.0 hype, Ethereum community are very good in hyping, they were using transition of Ethereum from proof of work to proof of stake as evidence for the fees to drop down because that time the network was experiencing one hyper fees due to increased in Defi adoption but after the change, I never see any decrease in the fees.
I just think once a network has been deployed, you can't change some metrics about it especially the key factors like the fees, we just have to manage the network like that just like Bitcoin.