Since the first cryptocurrency, the king of Coin is Bitcoin while others are just altcoins, another term for coin associations that exist in crypto, BNB is now a centralized altcoin in exchange or delivery with low fees and has a network of binance smart chain(bsc) so BNB it will never happen to be the King of all coins BNB forever remains the position as an altcoin.
I agree with your opinion, in the last 10 years, Bitcoin has always been the number 1 cryptocurrency, it has always dominated the crypto market. BNB has a very good ecosystem and network, their potential for development in the future is great, but to become the king of cryptocurrencies, I think BNB is not yet capable.