What this means in practice is that there's some space for discussing these topics, but only some, and not nearly enough to fully cover everything that's going on right now.
I understand that a lot of users want this to be otherwise. Quite rightly, they feel like current events are important and deserve a great deal more airtime. But our first responsibility is to preserve HN for its intended purpose, and HN is not an instrument that can accommodate much more of this. The threads that I listed above are, from HN's point of view, already a lot.
It's a pity, because to the extent that discussion here is marginally* more substantive than what's available elsewhere, it's natural to wish that it could be applied to much more important issues. Why care about the origins of Proto-Indo-European when the government is being burned down? and so on. We should turn our attention to the things that matter! But this argument just doesn't work in practice. The only thing that would happen if we "flooded the zone" on HN too is that the place would burn out.
* emphasis on "marginally". I'm not claiming it's particularly good—there is a great deal not to like.