No, this take is crazy. If ads were able to brainwash people Coca-Cola would still be the most popular drink in America.
The problem with "meaningfully influenced" is that a 1% bump in sales is massive for a company, but normally only represents a very minor shift in customer behavior.
US spending on advertising is, in total, about $1200/person-year. If you believe that advertisers are rapacious capitalists who will take as much as they possibly can, then they only believe that they can capture about that much extra per person by advertising to them.
That's not nothing, but it's not very much either. Ads are extremely overblown as a threat to society; you only need to look as far as eye-tracking studies of web browsers and the prevalence of ad blockers to see pretty good proof that people do just ignore them most of the time.
I'm firmly in the camp of "I'm not influenced by ads (or so I think)" / "not convinced that ads are actually a net positive". But even so, I don't fully agree with your take.
I think that it's very possible to think we aren't influenced, yet still be. My reasoning is that basically no one admits to being influenced. Yet you can definitely see the effects of ads on people: whenever there's a strong campaign for something, little after you'll see everyone buying it. Maybe they just try to "follow trends" or whatever, but that's just a form of advertising, isn't it? I only very rarely watch TV and have ad blockers everywhere, yet I can still detect when all of a sudden everybody has the same bag or same jacket or whatever. My bags last years and years. I doubt it's simply a coincidence and they all needed new bags right at the same time.
> Ads are extremely overblown as a threat to society; you only need to look as far as eye-tracking studies of web browsers and the prevalence of ad blockers to see pretty good proof that people do just ignore them most of the time.
I think that many people don't know about ad-blockers and try to ignore the ads while reading a website or scrolling some app. But that doesn't imply they aren't influenced. In my case, I'm fairly convinced that I'm not influenced by my instagram's feed's ads, since they try to sell me pregnant women's garments, of which I have 0 use as a single, childless male. But there can be other factors of which I don't have conscience, like seeing people use the same brand camera or whatever. Call it advertising-by-proxy.
However, take a look at people's screens when taking the metro or whatever. Many do watch the ads instead of just scrolling past. This is what I actually have a hard time understanding: people would spend a comparable amount of time on what looks like ads and what looks like their friends' stuff, as if it was the same thing. Which, granted, isn't a very long time. In my case, I only follow photographers and would spend a fair amount of time on people's pictures but scroll right through anything that looks like an ad (text or video of any kind).