Its home is everywhere is my point. The phrase is ubiquitous wherever English is spoken or written. Attributing it to Reddit is like attributing "how are you doing?" without the stress on "you" to Joey from Friends.
As anything posted on Twitter, it should be assumed to be fake.
But what is reported isn't far off from my anecdotal experience. I always sing, so when I don't I have had people around me ask me why am I not singing.
Im with you on this. I used to have a coworker that sang all the time and it was the most annoying shit. He literally would be like "This is just to fund my music career" constantly. Making my eye twitch.