This was the best I could find as to its origins:
https://boards.straightdope.com/t/where-did-thats-mighty-whi...
And so's the future - probably next century we'll be looked down upon as sad sacks of shit who didn't have the decency to get our weights into clean silicon.
I'd be interested to see something with more detail and citations. Or maybe even a rebuttal piece.
https://www.visualcapitalist.com/ranked-top-countries-by-ann...