I understand, but when you say "ruining the internet", I would prefer deceptive ads that blend in than those that make my eyes bleed, which is often the case with banner ads.
Patio11's ad is an image, and would be blocked. But you're still right, in that the closer one gets to mimicking unpaid content (such as Google or Reddit's sponsored ads, which are text) the harder it is to programatically block.