I believe this is to just for compliance because there are many kids who watch videos on YouTube but do not sign up or simply state that they are 18 years old. It's not that strict; it's just to ensure that they follow the rules. They are banning those scams or frauds, but not as quickly as they are copyright issues and plagiarism. I'm not sure why, but they still need to act. There are a lot of videos out there right now that promote scams and have a lot of views. We can't do anything about it, but we can be cautious.
We can report it up and hope that the team behind those streaming sites will act as quick as they can, there are indeed many scamming activities inside this platform and I agree also that they are quicker to ban or to give streamers plagiarism case than taking those scamming account down. If you do care about yourself or someone from your family better to keep an eye on what activities they are involved, better to quick fast than being sorry after.
Fake bets from streamers attract attentions from viewers who wanted to experience same luck. The problem with that, they've been alluring and being led to gambling sites where they are unsure if they are safe to play.