They are not purely crypto so you get to hear about other places as well but in there you can talk about the casinos and check out casinos you want to play and that is how you can see if there is any bad news about them or complaints and all that, thanks to their freedom of speech to talk about casinos if one is bad than there will be hundreds of horrible messages and if one is good there would be hundreds of love messages there. It helps you pick the best one from there.
I also like the Bitcoin forum because absolutely any answer to your question can be found here.
Here you can read the opinions of other people about the sites you are interested in.
And also extract a lot of other useful information.
As for gambling, there is enough information on gambling sites on the forum, the main thing is to be able to find it.