Many ads do not tell how they work instead just tempt people to join them and if people join without research, they will make their own mistake. That makes many people lose their money without a chance to make money. People should be cautious when they watch the ads and not do something that can get the worst experience. Maybe Youtube is still trying to monitor all of the ads that can make people ruin themselves, but it still needs time for Youtube to ban the wrong ads.
Look, Google even controls YouTube ads very well. The problem is that often what is advertised, there is nothing wrong.
I can create a YouTube ad, and just say, "I can tell you four ways to make money, easily and effectively. Don't miss the opportunity to increase your income and have what you love most."
And then the service I provide is to refer people to websites or services that allow people to earn money through work or investment.
This is not wrong, nor is it a lie. But it really is a rogue scheme, to take money from people, about things they already know.
Unfortunately this will be difficult to eliminate, and for Google to ban. Then, it may not even be in the ads themselves, but in the videos on the platform, and in that sense it's even more difficult.