[aptwebapps]

You said no one expects that and he pointed out the style guides do. So some people do. In addition to the style guides, a couple people here have said that they do as well (which is why we're arguing). I'm another. Regardless of whether the majority think this way, we can safely say that some people do.

Getting back to the actual point, in formal writing, quotation marks are definitely considered to delimit actual quotes. That's where their name comes from and that's their purpose. If you want to paraphrase or otherwise interpret what was said you just work it in without quotes.

Personally, I relax my expectations in informal contexts if I don't know the person or their writing habits, but I'm just being pragmatic. In other words, the rule doesn't change, it's just not always followed.