Yes, I’m saying it is not a disadvantage.
By the way, I also believe that people who grow up knowing French are not at a disadvantage, linguistically, as compared with those who know English.
There is no disadvantage for mastery of either COMPLETELY DIFFERENT language, so how, on Earth, can having different units be such a limiting problem?
If you were a mechanic, you'd quickly find that out after having to buy two sets of tools instead of one. Three sets if you work on British cars.
The world runs a little smoother when everyone is on the same page.