This is a bug and should be fixed.
Obviously don't want easter eggs in things like security code.
> @MarnanelThurman No problem, at least there was some fun ;-)
So I'd say the answer to your question is: "some". Some being more than none, I'm almost tempted to think they enjoyed this little episode.
You'd also have to add the joy of all the people encountering this. Since it's somewhat likely that someone typing "man" after midnight and forgetting the parameter is somewhat frustrated, I'd venture a guess and say this easter egg is a net positive for humanity. Since happy people working after midnight are better than unhappy people working after midnight, I'd even go so far as to say that it improves productivity. And productivity is my professionalism.
Each one by itself maybe is cute and "makes you feel human", but not the aggregate behavior.
Search for more cowbell (in a search field that's geared towards finding installs of an app), get a gif with more cowbell.
Sometimes, it's the little things that matter, that make you smile when you're in the middle of a crisis. I think the world needs more of these instead of less.
There's probably someone somewhere using this as part of a mission-critical timing proceedure.