How do you know ETH gas fees will be lower in near few months? I don't think it will happen soonTM, so I believe BNB's rise will go on in next couple of months. Even if they fix ETH gas fee problem it won't be near as BNB's low fees. People get tired over 100$ swaps so they switch out. ETH swap fees won't be 1$ anytime.
I think thats too good to be treu...eth have a strong and solid network and the high fees really wrecked everything...small traders start hating this network and focusing on bsc network projects and this will make them lose many opportunities...also many project that keep using the network are finding huge difficulties in token distribution especially for airdrops