Sorry, I thought you were making a general comment. I didn’t realize you we’re criticizing the “metric money” statement.
But, reading over that person’s comment again they also say “centidollars”, which also doesn’t exist, so I believe they were trying to make the point that the US was the first to make a currency that seems to adhere to the same principles as the metric system since their currently since 1 centidollars = 1 cent = 1 dollar/100.
(I’m pretty sure it was a joke though. We don’t use kilodollars, etc)