Mainly everything that centralized exchanges like Binance do is to make money. The fact that they advertise shitcoins as "cheaper options to withdraw bitcoin" is because they want to advertise their own shitcoin called BNB. In fact there are a lot of things they encourage people to do using BNB which is the only reason this shitcoin has been pumped. Who makes the most profit when it pumps? Obviously Binance since they create it out of thin air and sell it to newbies.