If people keep submitting (edit: I should really say upvoting) wikipedia.org articles on widely popular topics, we're going to have to penalize Wikipedia submissions again. We used to do that, but I was persuaded to remove the penalty. This case is particularly bad because the topic has long been an internet cliché, and also because it has a meta aspect. Meta is internet forum crack, so we try not to do it here—er, not too much.
https://news.ycombinator.com/item?id=23114661 is another current thread where the topic is much too well-known to make a good Wikipedia submission.
Good HN submissions from Wikipedia are about topics that have not been widely discussed before, and about which there isn't a good article available elsewhere. (If there is, it's best to submit the latter instead.) Since Wikipedia is the most generic of sources, short of maybe a dictionary, it should be the domain of last resort for a topic.
I appreciate that not everyone has seen the same things. You can always use search as a proxy for how well known something is: https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que....
This has been coming up repeatedly recently:
https://news.ycombinator.com/item?id=23089041
https://news.ycombinator.com/item?id=22990237