I think only coins.ph are restricting it, they have different regulators so things are different, however, it doesn't mean that the rules still stick forever, we should also expect that in the long run, they maybe add more strict restrictions on using the platform and that includes prohibiting from your Binance wallet in sending and receiving gambling funds.
Coinbase is also one of the exchanges that have the same restriction towards gambling. It was even known back then that Coinbase is freezing and suspending accounts because of the gambling activity of their users. I remember back then in our local crying over Coinbase because of that although that user didn't show any proof or screenshot. It's more of suspicion due to continuous activity on a gambling site that the user did before the suspension of the Coinbase account.
Yes, I agree with you that someday centralization will be more strict towards exchange, be it on global or local exchanges.