As much as I can agree that my purchases are also not tied to advertising, other than "Sale on apples, 50% off", I don't think you can extrapolate based on the people who frequent Hacker News.
I work on advertising at Read the Docs and when we were first added to the main ad blocker lists our revenue went down. We were 100% pay per click at that time and our revenue went down by the same percentage as the number of ad impressions went down. Looking at it statistically, developers who run ad blockers still click on ads at the same rate as those that don't as long as they actually see the ad.