I seem to recall that trucks delivering fuel to petrol stations have to measure their deliveries at a particular temperature and pressure.
On the other hand, this is the same kind of story as Einsteins Theories of Relativity. Sure, they’re more accurate than what Newton postulated about gravity - but even today most engineers and scientists can rely upon the earlier theory. It’s only when you’re dealing with enormous scales, tiny scales, or need incredible accuracy that Einstein’s ideas are useful. Things like designing microprocessors, radio telescopes and GPS satellites - or missions to Mars.
Nobody doing physical trading will rely upon the new definition of a kilogram.
I’d be very surprised!
On a slight tangent, a woman at work mentioned her husband’s age to me the other day and then that she was seven years younger than him. It didn’t take me long at all to convert his age to 111111, while she is 111000.
It’s just logical that we should eventually move to binary - just as computers go quantum.