As I tried [failed...] to explain through the examples, the point refers more to spammy and content-poor ads than highly relevant and targeted ads.

So probably not so much retail ads targeting specific intent-clear search terms (e.g. SEARCH: "buy book-title online), rather Facebook-type "Top 3 routes to a flat stomach discovered by this 94 year old woman".

Do they do as well? I don't know. But I see them all the time and the post was my stream-of-consciousness as I try to not mind that fact.