I am being honest here; I have never seen any mixer ads on Google or Facebook. But I have seen a lot of phishing websites, Ponzi scheme websites were on sponsored slots. Which means those were promoted by paying to the platform. If you talk about a search result, fake websites often appear in the first result, and I don't think Google cares about it.

Usually, I do not use adblockers, and I never needed them because I do not browse the internet for any reason. I mostly spend my time here and sometimes on Facebook and Twitter.

Maybe real mixers did not need to promote their service on those platforms. But, if they want, they might be able to do it as long as they have money.