Most people probably don't need to adapt, the metric system has been around for a while
True, I'm one of those Americans who never had to learn the metric system, so I and us fellow Americans are probably more confused than the rest of the world would be.
When I went with my father to England and visited a friend who owned a few race horses I had a real headacke with 5 furlongs , 7 furlongs , 5 furlong and 16 yards , 5 furlong and 182 yards.
At that time I wondered why can't they just go with 1000m , 1200m , 1300m.
But I bet a brit would be confused by the metric system as I am by theirs.
Britain has used and educated peeps in metric since ~ 1975. Horse racing, road signs and cricket are the exception.
I still make fairly frequent use of non-metric stuff mainly for the benefit of [some of] my American friends.