

That would be rather dumb and useless for real world use. Battery charging curves taper off aggressively when you approach 100%.
My Ioniq 5 can do 10-80% in 18-20 minutes. But the remaining 80-100% can easily take 45 more minutes… So I can get way further, in a shorter amount of time by charging to 80%, driving until at 10% and then charging to 80% again.
On top of that… For NMC batteries, the charging from 80-100% is where you put a lot of wear on your battery. So if you are at all interested in battery longevity you should avoid charging above 80% as much as possible.
Here’s some data about the charging curve and amounts of time it takes to charge in different intervals on the Ioniq 5: https://evkx.net/models/hyundai/ioniq_5/ioniq_5_long_range_awd/chargingcurve/













Sure, if all manufacterers included both, that would be nice. But removing the 10-80 to replace it with a 0-100 would be useless.