I question whether a "large majority" of people using adblockers are aware they are doing anything other than blocking ads. The HN crowd tends to overestimate the tech-savviness of the general population when it comes to this stuff.
I understand what you were saying, but I made the (unfounded) assumption that most of the general ad-blocker population were turned onto it by someone they trust who is more computer-savvy, and those people will generally continue to recommend ad-blockers to their less-savvy friends as long as good reasons still exist.