Duckduckgo does not. Hacker News does not. There are many examples. Ads on blogs such as Daring Fireball and Coding Horror do not. I gladly whitelist these sites.
Do Hacker News and Daring Fireball have ad platforms?
Until march of last year Daring Fireball had The Deck[0]. Now it's just weekly sponsors, AFAIK.
HN has in-feed ads for Y Combinator businesses. A great example of benevolent, win-win advertising, in my opinion.
Sure there are fringe cases where it's not true. In substance ad platforms are now tracking & targeting mechanisms. That's the "value" they sell, not their ability to deliver ads.