it's not really about advertising, but it's effects. advertising per se is not bad, basically it's just some kind of product information. that's all. but it's coming with some negative effects that are bad. SEO and Affiliate are one of the best examples to that. the thing is that advertising is connected to revenue/profit. which is the root cause of all little problems up the stream.
I definitely agree, and I think we should focus on mitigating the actual bad things while either recognizing or considering that the ads themselves are actually good. It's definitely possible to improve the situation and trying to give up and destroy everything will not help (I don't agree that profit motive is bad though, it's incredible and beautiful as an aligning force for humanity)