This is absolutely untrue. How many times (and how many ways) does dang have to clarify this? Here's the guideline in question:
> Off-Topic: Most stories about politics, or crime, or sports, unless they're evidence of some interesting new phenomenon.
I'm prepared to argue that a comparison of the aging process of HN comments to tweets from a current US President about a former one is an interesting and novel set of phenomena. And even if it weren't, I think that it's well outside the kinds of stories that are identified by the guideline as off-topic.