I am very surprised to know about these laws. When there is no rule against the activity but there is a rule against publishing it. Actually, I have never heard of such a rule but came to know from your post. I think the majority of the people have not heard anything like this.
You're right this is a bit too much. The way I see it they're throwing the baby out with the bathwater. They don't want people to scam newcomers by giving them a false sense of security in a casino, pretending that it's easy to win and as a result making those newbies lose money. Not allowing to post your wins at all it going too far because this is like telling people to shut up and not discuss anything. We are allowed to discuss politics, history, new technologies, but can't share our wins in a casino? Can we even say that we were in a casino? What's next, they won't allow you to say who you voted for or that you own a gun?
This is stupid and I've never seen a country actually ban free speech this way.