BNB itself is tied to binance, and CZ basically rules that world so it is definitely a bit of a challenge to say that it is a true decentralized coin, and when one place takes the control of a coin like Binance does to BNB, that is always a problem, look at what happened to XRP and Ripple for example, but at the same time they are using BNB in a way that it is reaching to a point where I think BNB could technically go beyond ETH as well, become second biggest coing, they are THAT good at what they are doing right now.
Of course this may take a long while but it is on the map of possibilities. Chips adding bnb is just amazing, that shows how chips team is aware of the situations going around in the crypto world and what people like.
You are right in everything you say, leaving crypto technology aside and everything it represents, it is understood that Binance has a business model expanding according to its plan managed years ago, now one of the ways to enter is to Through the games, which is not bad at all, the players see BNB favorably, the casinos cannot be left behind, because they are interested in what people ask for.
However, I believe that there is still a long way to go to reach ETH, but it is not ruled out, this will undoubtedly make BNB survive and that is what is sought in all crypto projects. If this is what is sold and the players ask for it, then it has to be done, without a doubt I think that many casinos are going to take BNB into account and integrate them into their platforms. And seeing it from the point of view that the fee will not be expensive, it turns out to be beneficial for the site as well as for the client, also that the games become more attractive when the casinos offer more options in cryptocurrencies. I think Chips.gg sees it that way, just like Betfury, it remains to be seen if the other casinos implement it, it is a matter of waiting.