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.
Yes, at this time Gas costs on the Ethereum network are not stable and still often experience sudden increases and decreases as well, so there are still many people who use the BSC option in terms of transactions for lower fees.