But gambling with coins will involves of spending more money on the play coins. Which have no value or gain at the moment (if they have value, they wouldn't be play coins, they do just be different kind of currency) So, you’re paying for the privilege of risking something of no value in the hopes of winning something of no value. That doesn’t even count as gambling anymore; that’s paying a fee for the privilege of keeping score on a random number generator. What's your own opinion towards this?
I do not understand what you mean by this. Either you are gambling with coins like bitcoin or you are gambling with fiat, they are money and they both have value.
I think the Op is referring to free coins that some game platforms usually give out, not real crypto currency like Bitcoin or any other one that can be exchanged for fiat or any other currency, but whose value and use only end in the place where they are given.
The last casino I have seen one of such is BC Game. They have their own coin, which can only be used on their casino to play with, and games won with the token can only be rewarded with the same token, and I don't think they can be transferred out of the casino or even swapped for any other currency.