I wish I had written this. If the humor/cynicism gets to you please power through and look at the actionable tips which will earn you more money . There is approximately no-one on HN, not even at the best managed firms with the least BS imaginable, who would not experience positive ROI from "Congrats guys, we just shipped X, let's have a celebratory dinner at $FAVORITE and I'm buying." That idea is freaking genius .…
Larger events can be harder to coordinate, but I've often used food in various ways at work. Usually, bringing in a cake or something like that to celebrate something, and often something small ("hey, the build server works!" or "hey, 3 people had a birthday in December!")
It can certainly be overdone, but can also make you memorable to people. I brought cookies and milk (for up to, say, 6 people) to a job interview 7 years ago. The day I did, it happened to be the company owner's birthday, which was quite a coincidence. The owner called me up a few weeks ago asking if I was available for some work.
He remembered me all those years later because of the $7 I spent before a job interview. Not because of the paper my resume was on, or how cleverly it was worded, or the color of the tie I wore, or what I drove, or what my code looked like, or how I used vim instead of emacs, or what certifications I had, or what color my hair was.