Fair enough, but the domain is already shown next to the submitted link on HN. It might not confuse you, but it apparently confused other people, and it's really redundant information anyway.
Of course, it is subjective, but that's the point. I understood the same thing as jhuckestein.
I wouldn't've clicked if I hadn't understood it that way - I don't really care about the sites that dropped, but I know Quora has decent content and if it was the most penalized, that's a huge problem with those Google changes!
headlines dependent on subjective interpretation = bad