We have three (including this) FreeBSD posts in the past two days.
Back to FreeBSD: Part 1 (hypha.pub) https://news.ycombinator.com/item?id=47108989
Linuxulator on FreeBSD Feels Like Magic (hayzam.com) https://news.ycombinator.com/item?id=47113527
No conspiracy, I think it just happens. One person posts something, maybe someone else reads it and gets into a rabbit hole on a topic, or maybe someone sees an opportunity to throw more conversation pieces at something hot.
Generally people get more excited any time a major release of anything comes out. But FWIW HN has always had favorable front paging for anything related to FreeBSD and OpenBSD.