Token burn events are an important part of the economy of the Binance Coin. Burning tokens means you send them to an address without known keys. This way the coins will be out for circulation forever. With supply decline a positive effect on price and capitalization could happen. Especially if demand will be the same.
There are dozen times of token burns by Binance. They have made several million coins unavailable. Now the company is considering speeding up the process. The exchange has continuous BNB revenue because you get a fee discount when you pay it with that. A part of this revenue gets burned, so the supply and demand dynamics increase.