It's not that I can't find this news elsewhere, and how does it gratify my curiosity? It's the most discussed news item today.
HN just likes some games more than others. Will we see a thread for Horizon Zero Dawn or Last of Us? No. Will we see one for a Factorio sequel? Definitely.
Especially since a lot of people here who are interested in it are probably not interested in participating in gaming-related social media.
Same goes for huge news events where loads of people here who usually don't pay attention to news suddenly all want to pay attention to one item; it's natural to do so on the only news community they usually engage with, even if it doesn't actually make sense for that community as a whole (as this community is largely defined by NOT having that content.)