BNB will continue to burn up the available supply and with what is being done currently, it is hoped that BNB will become very expensive someday. The coin price can be expensive but still has very cheap transaction costs, that is the advantage of BNB. BNB also has a fairly stable network and never goes offline.
That's right, BNB will continue to do that. That way at least BNB has the opportunity to become very expensive because of course the supply of BNB will decrease and it will become more difficult to get BNB. So far BNB prices have become expensive.
BNB has a Binance platform which can also be used to manipulate prices easily, so burns and several events on other Binance platforms will provide opportunities for BNB to increase prices.
Indeed, the advantage of BNB is that, as you said, they have their own exchange, but it is not as easy as what you said to manipulate something just to increase BNB, because everyone also monitors every movement that is reasonable or not, and you also have to know that the plan has indeed been implemented. In their WP and in detail, and according to what is done.
It's normal if there are people who are pessimistic and say what you said and that's normal, but investors are still trusted and the value of BNB is very good.