i don't think BNB can replace Ethereum position even they are backed by Binance exchanger.
Ethereum community more stronger than Binance, even this exchange one of big exchange in the world, still still have big space in community, and about the price we can value ourselves in the market
And it seems to me that maybe eth does nothing for its coin , the coin just stands still without updates , and now look at the BNB coin as it develops and what it could do in 2 years.