Well I guess BSC will remain better option because the eth gas fee will go high sometimes. The gas fee is getting lower now but we don't know that in the next days it will go high again. The problem is still remain so hopefully in the near future the gas fee of eth will resolve.
Gas fee matter in doing transaction every now and then sending the token and buying tokens in erc 20 with high gas fee is frustrating. Gas fee means a lot for us small or big fish in crypto. So, BSC is the shock absorber for every migrated project from erc 20 to BSC. Binance will become more prominent in due time once Ethereum gas price become higher.
It's because of high demand of transaction. Who ever pay higher than anyone else for transaction, they will get first. No matter who's waiting and for how long. As long as this continue, some people won't use ETH network as much as they need