What the former side ignores very often is that there are scam ads to scam websites that are basically malware. The ads with fake sign up buttons, the flashing ads saying you've won money, basically any video ad I've ever seen. They're garbage.
What the latter side ignores is... basic human agency? Nobody has ever had a gun to their head and been forced to buy a salad spinner off of Amazon because they saw a banner ad or read a sponsored article on a recipe blog. I have regretted purchases I've made, and some of those were probably only made because of an advertisement. That's my fault, not the advertiser's. If you don't want to buy something in an ad, don't buy it. A company having more fine-grained detail about your socioeconomic status or third-party purchases does not remove any of your agency.
My agency is removed when the mechanisms used to serve those ads aggressively invade my privacy and surveil pretty much any and every activity I do in daily life. This happens regardless of whether I click the ad or not. How does one miss this side of the argument? And no, "use an adblocker" or "use ublock origin" does not fix the problem.
But to your point, what agency of yours is removed when you buy a product known to actively spy on you, you take no measures to stop it, and that ends up with you being shown ads based on whatever you were browsing?
There is no opting out without entirely opting out of every day life. Whatever viewpoint you're coming from always seems completely oblivious to this.
"I wish the farmer knew more about me, it gives me corn but what I want is sunlight !"