I normally exchange my crypto to usdt alone, and I'm used to it already each time I want to sell on Binance I only pick a USDT  pair, becuz with USDT I can access both  Ethereum and Tron blockchains since it runs on both of them, I believe almost every trader make use of USDT becuz it is available on almost every crypto exchange, but I can't say the same for BUSD which is only listed on Binance exchange now, maybe people will consider using it when the demand for it grows.