Exchange must respond to new developments. Those who are older than 3 years on the market knows. How Poloniex lost its popularity. How popular Bittrex became. Then Bittrex was thrown into the back of how to market. Binance follows every current development. They have to.
But the question is when? For the exchange to be able to have compatibility to the coin, specifically the changes from the coin, the developers must submit the requirements and how to adapt it. It is not just a single party job , it is a job of both to meet in the middle for compatibility. Binance did a great effort on having this one, indeed one of the greatest exchange we have. Well Poloniex became a lesser choice for some who didn't want show their identity to anyone, too bad for poloniex, their users sees it as a threat instead of added security.