Again, that universalist argument could be applied with equal vigor to language.
English is by FAR the most widely spoken language in the world (Chinese is of course the highest NATIVE language, but as far as people who speak *some* of it, English is nearly 3/4 of the planet).
So as soon as the world dispenses with the silly particularism and ethocentricity of languages, I'll be on-board with dumping the US measurement system.
I'd only also point out that 0.5% of the world states are superpowers, and 100% of them use the US measurement system. Coincidence?