http://doc.robofont.com/documentation/welcome-to-robofont/
Chinese typesetting software had traditionally included a glyph editor so that one could add a character that isn't supported by a font. However, that's not something people want to do very often. It also involves re-inventing the wheel. Its better if one team spends years making the font comprehensive and well designed.
But should that adjustment result in manual one-off changes, or should it result in a new tweak being taught to a system that can then apply it anywhere else that problem happens?
In other words, why can't we build fonts the way we build Text-to-Speech voices?
Fonts are the same, except they're used by many more people and last much longer than that brief moment when your text-to-speech software stumbles on an uncommon combination of words.
I'm sure that the technology will rapidly improve as more and more Chinese fonts are needed, but as long as AI remains inferior to humans in some way, I don't see it getting all automated.
Youtube seems to have a lot of examples. (https://www.youtube.com/watch?v=0zCVx9L90ac ?)