And the current day thinking is very conservative, especially Unicode wants to be able to capture and preserve every single little detail of writing that ever existed. Historically human languages were far more flexible, and did adapt to changes; not being able to reproduce everything exactly as hand-writing didn't stop printing press, and various languages added and removed letters from their alphabets. Try writing things in a different way these days and you will be told that stuff is misspelled or otherwise wrong just because it doesn't match what some grumpy old men decreed hundred (or two) years ago.