It is fascinating to see a generation of people insist on the wrong thing simply because they don't understand the right/better thing.
Or because it is of foreign origin.[2] There have been dangerous incidents because of conversion failure.[3]
[1] https://www.statista.com/chart/18300/countries-using-the-met...
[2] https://en.wikipedia.org/wiki/Metrication_opposition#Metrica...
[3] https://en.wikipedia.org/wiki/Metrication#Accidents_and_inci...