I get that you disagree. People disagree about this all the time, often strongly. I doubt there's a single story that every user agrees belongs on HN.
The only unusual thing in this case is the drama you've created about it. We can debate whether a CIA director nomination belongs on HN, but there's no question that the above submission and your comments are breaking the site guidelines. Those are at https://news.ycombinator.com/newsguidelines.html. Please read them and follow them when posting here. They're written the way they are for good reasons, based on over ten years of running this place.
No one's questioning the importance of major political stories, by the way. Of course they're important—much more important than most of what gets posted here. That's why we need flagging. Otherwise they would take over the site, and HN would be a completely different place.
HN's mandate is to gratify intellectual curiosity. Not all political stories are off topic, but the ones that only stir up outrage, however justifiably, and don't also gratify intellectual curiosity, are not a good fit.
Stories like the one being discussed are important, and need to be heard. There could be a compromise solution where everyone ends up happy.
I'm pretty sure Google News and, even though it's not it's main purpose, Facebook are far more popular news aggregators, and even if the latter isn't intended as a news aggregator, both are deliberately more general focus than HN.
For news discussion platforms, Facebook (again) and Reddit are bigger than HN.
HN is distinguished by it's focus.