This "association" business smells like a logical fallacy to me. Since when has advertisement even implied endorsement of nearby content?

If I see a billboard on a bus station, what is the advertiser endorsing here?

What about a magazine ad? Reasonable people assume the advertiser supports every view expressed therein?

If I happened to see an ad on a website with user generated content, would I really think the advertiser endorsed each post?

Sorry, this argument is fallacious. Reasonable people do not make these conclusions.