I doubt it is a moderation decision. But there are plenty of people in big-tech here that have flagging powers and there are also plenty of people who may decide it doesn't belong here. HN has a strange relationship to politics. On the one hand HN wants to be an a-political safe space where you can discuss technology without politics and without considering the political ramifications of various actions, on the other it is abundantly clear that many of the people active here have a direct effect on the outcome of some of this stuff, either because they are employed with the companies (and by the people) that do so, because they invest in them or because they are big names when it comes to technology. It takes - by my estimate - about 40 flags to push an article with this many upvotes off the homepage.

I wrote about it in 2017:

https://news.ycombinator.com/item?id=14468554

The hypocrisy is - to me, at least - evident: you can't claim to be 'improving the world' according to your own vision of what that world should look like without serious consideration of the political angle. At the same time this is precisely the fig leaf many of the biggest politically influential companies hide behind. Flock, Facebook, Google, Amazon, Microsoft, OpenAI, Anthropic, SpaceX and many others make their bread and butter out of various aspects of the surveillance state and they wield their political clout like every other weapon in their arsenal. Having a forum like HN question your choices in life can't be easy. So the flag button is a simple way to get rid of any personal doubts.

edit: I just re-read that thread, it is really interesting to do so in the light of the present day political climate and the upcoming elections. Also interesting how the view on Elon Musk changed over the years.