Mostly we have opinion that exchange tokens are worth nothing except raising funds for exchange and in return discount on trading fee which truly dont need token.
But Binance and CZ changed this thinking. BNB usecase completely changed in last few years. They brought Binance chain with bnb as fee. Though Binance Dex could not become more popular but such a low fee for transferring most of tokens was really good idea.
Then we see Binance Smart chain where we can use BNB as ether and access all features and security of ethereum network at almost 0 fee.
Using BNB for launchpad or farming other tokens in launchpool.
Using BNB as payment for many website like traval.com
AND MANY MORE USECASE

I don't see any reason to say its future is not bright like its present. Unless we see binance getting hacked. Hope it never happens.