Well, that's the problem nowadays, influencers and streamers don't even check the background of what they will support or advertise even though it could mean one or two people getting scammed in the process. All they care about is the money and as long as the client will pay, they will do everything to advertise them.
So, what can we do to avoid them? We can just unfollow them if it is on social media or we can report them so that maybe some actions will happen even though it might take long. I think this kind of industry will grow as everything is on the internet in this era and probably more people will be tricked.
And that's also not a surprising thing with them because we see these streamers are also targeted by phishing and hack. So, any offer they think is quite decent, they click links and forms to sign the deal or any other proceedings.
We see from that situation, you're right that all they care about is money.
On the other hand, as long as I know about gambling, to be honest I have never seen streamers who broadcast while explaining to the audience about the dangers of gambling or the bad impacts that can be caused by gambling, the reason I am sure is because if they did that then the number of enthusiasts would be less and that means the commission they will get from the casino will not be too big.