Earlier quoted context omitted.
> this design makes the common case much simpler at the expense of making the rare case harder In the age of emoji (and uhhhh, everyone who doesn't use English as their main language), I don't think your "rare case" is really that rare.
There must be statistics around how much of the data in the world is or could be Latin-1. I'm going to guess it's a very high percentage.
Counting webpages (not bytes) the number is near 50% are English only and 50% are other languages.
Only 20% of people worldwide speak English.
I know other languages can fit inside ASCII but, really?