Greetings friend...

As you have rightly said, the burning of tokens is expected to help boost the price movement of the asset. And this is expected to help Steem also as like your given Example in BNB with the introduction of Burnsteem25.

Burning Tokens helps reduce the quantity in supply thus increasing the demand rate which is invariable and expected to boost the price.

You have written explicitly well. Thank you for sharing. Good luck!