Binance can manipulate BNB prices but it's not that big, because we have to go back to the basic factors that influence prices, namely demand and supply. Unless BNB burns its coins in large quantities, it will have a huge impact on the price of BNB. Binance is just trying to keep BNB from falling, that's all
That's right, that's why the Binance exchange always provides several useful launchpad events to cover their ways a little when they want to manipulate the price of BNB. We just need to follow BNB price movements and we will automatically make a profit.