alt Hacker NewsSo that you would notice sites that are serving obnoxious ads, and remember not to visit them in the future.
Maybe you are saying "the whole internet is like that now, it's impossible to find good sites without obnoxious ads", but I don't think it's that bad yet (hacker news is a good counterexample). But if everyone keep visiting user hostile sites, the site operators will see no incentive to change.
Frankly, I just don't care about the distinction. I'm going to engage with sites, I just choose not to download some of their content which I find annoying. Whether they offer that content or not doesn't matter to me at all, because I never see it anyway.
And for those that are countering this with "but some sites can only cover their costs using ads!" I say: Tough luck. I'm readily paying for things if I want them; if you can only offer something in exchange for advertisements, I don't want it.