[Tainnor]

> Nor do I think it's practical because there are likely to be tons of disambiguation problems with hiragana text.

Humans are good at disambiguating in context. Those ambiguities can arise in spoken language too (minus those that are differentiated by pitch accent, but that still leaves enough room for homonyms).

> Changing a language is probably a terrible idea if there's no documented instance of native speakers actually wanting the change.

I agree but that has something to do with sociological reasons. I wasn't advocating for changing Japanese.

As late as the Edo period, there were entire genres of literature that were written almost entirely in Kana: https://en.m.wikipedia.org/wiki/Kanaz%C5%8Dshi

Clearly, people were able to read that.