Because it's about a happy event.
Because of the quote: "I often tell my students that, in my humble opinion, one purpose of government is to help people be happy."
Best of all, because of the way that quote makes commenters' heads ass-PLODE like a Star Trek computer asked to calculate the last digit of pi. One is reminded of Aziraphale's comment to Crowley at the beginning of Good Omens (from memory) "I'm not sure it's technically possible for you to do good".
Manicheanism. The mother of all heresies.