My guess would be because HN likes sourcehut's open source approach (I still read it as 'Sir Hat') since its announcement on here. There are some projects that HN as a community tends to like and upvote just for visibility without feeling the need to comment on it.

Beyond what sourcehut is providing, I would also upvote because of Drew (Sir_Cmpwn). I don't know him personally, but based on blog posts, HN comments and interaction via email, he seems to be very helpful and polite, my general impression is that this isn't the norm in open source.

That's a good sign. Comments usually signal quibbling to outrage; there's no culture of "me too" (in the AOL sense, not the sexual assault one!) here.

Commentary is not needed to be interesting. There may not be much to add.