And this is just motte and bailey. Yes, there are some advertisements like you describe. No, vast majority of them aren't like that.
It's like a city was proposing to limit car movement through the center to improve air quality, and you countered with "but some cars are electric and don't pollute!". Yeah, right. Wake me up when most of them are.
An advertisement that happens to reach someone who has a problem that your product solves isn't a scam. It is a way to get that person to know about your solution.