On a very superficial level, i agree, just as they are happy to buy fuel or oil in litres Most building materials seem to be sold in metric, our local timber merchant sells 100x50 in lengths from 1.2 to 4.8m, not 4 by 2 and 3feet to 15ft and 12 inchs.
How many could tell you how many fl oz to pint or how many yards in mile? or could read an imperial ruler?
"Most" people with a reasonable education know a litre is a 1000ml or kilometer is 1000 meters and understand perfectly a ruler and how it is divided.
Dread to think how the vaccine roll out would have worked out with doses in minims!