Wouldn't Google's UX be better if there were no ads? In the short term, maybe. In the long term, it would kill the company, so there wouldn't be any UX at all.
When I have to watch that very same 30 second Hoodie Footie Pajamagram - the perfect way to snuggle up - segment before each and every 3m news video on CNBC it's a torture for my brain.
I wish more sites gave me a reasonable way to buy myself freedom from that "highly relevant" bloat.
[Edit] As a service provider, I appreciate the convenient excuse you provide for torturing my users ;-)
you are right, however, if the people you are generalizing for are HN folks, and websites other than Google.
Of course, not all non-clickers would be terribly annoyed, but many of the clickers might still be annoyed by the distraction even though the ad was relevant enough to click on.