Flaws I see in the argument:
a) the assumption that all advertising is interchangeable in terms of what it's selling,
b) the assumption that users who use adblockers are uninfluenced by advertising,
c) the (incidental or deliberate) failure to consider the clickbait effect.
On the first point - nay. I don't mind, say, relevant product ads on a site like El Reg. I'm clearly interested in tech, I don't object to informative ads that tell me about products in which I may or may not have an interest. Even if I don't want to buy them right now, I can see value in knowing the state of the market. That's not true of NSFW ads, nor is it true of ads sufficiently unrelated to the topic of the site on which they appear. (And don't give me the old "contextual advertising" canard, the state of the market for that still appears to be "Hey, you bought one of these things once, do you want to buy 500 similar items now?", and if Amazon can't get that right I figure no bugger's going to any time soon).
On the second point - I'd love to think I'm uninfluenced by advertising, but as far as I know there's a great deal of research (not to mention advertising spending) that says otherwise. I can buy the "I don't want to waste bandwidth on ads" argument, but "I'm not affected by them so why bother?" is wishful thinking. Now, "I don't want to be affected by them" is another matter entirely, which takes us to the third point:
On the third point - clickbait or obtrusive ads. Whether it's flash ads with autoplaying audio (die in a fire, whoever popularised that idea), expanding overlay ads (ditto) or the myriad ads using barely-clothed women to try and flog anything other than actual products featuring barely-clothed women. Most of the time these can't be considered "informative" - they're a ballache and a pimple on the flesh of the internet. And in no small part the reason people want to be able to block advertising. It's understandable, since a lot of blogs rely on the same clickbait effect, but it's still a bad thing.
Basically, if blogs and advertising networks want to understand why people so often dislike ads, all they've got to do is look at their own willingness to flog utter crap at their audience. That disdain goes both ways.