It should be noted the French Revolution clock and calendar were part of the same “reforms” that included the metric system, which has been an enormous boon to science.
The USA is pretty much the only country that hasn’t gone metric at this point.
Science and engineering are metric in the USA.
Gas stations and Home Depot aren't.
Why hasn't all of Canada "gone French?"
Why hasn't all of Europe settled on German?
I'm sure it would be an "enormous boon" to do so.