Right, unless we're talking ads for a brand I already know and trust, I just assume that all ads are scams. Even Googles ads, which was previous very good at finding me the products I wanted, from good sources, a now overrun by scams (or borderline scams).
The online adverting industry is raking in billions on scamming people, while providing questionable value for actual good brands. Even if your company is honest and makes good products, you're competing with the scammers for ad space and that pushes up your cost.
I've said this on multiple occasions, but I do not believe that the honest companies are able to fund the tech industry in it's current form. Meta, Google, Apple and everyone else, expects increasing revenue, year on year, most of which is suppose to be delivered by ads, bought by other companies. Those companies just aren't see the same level of growth, nor do they see enough value from ads to increase their advertising. So the big websites take in more and more questionable ads to pad their numbers. So what if consumers get scammed? They should have been more critical.