Only the fees that BSC had made an advantage against ETH but overall, the ETH network is still in major use even today. And one reason is that ETH has already been established strong, major projects are using the ERC20 platform that couldn't leave ETH on the space. If we just have the option to use other platforms even it was ERC20 tokens, that for sure traders and investors are already ignoring ETH but still don't have and live no choice but to pay for the huge fees.
basically, ethereum is very good indeed. proof that even when the fees were huge, there were still a lot of people using it, even ethereum hasn't moved away from the best coin after bitcoin, and still has high volume today. however, many people are looking for alternatives to payment and use BSC instead. however, if the ethereum fee has returned cheap, it will put ethereum at the top of the altcoins. however, right now I might be inclined to use BSC, however, I don't doubt the potential of ethereum.