Earlier quoted context omitted.
Have you read japanese written only with hiragana? The language has so many homonyms it is hard to distinguish them from a text as it is a heavily context based language. I’d argue abolishing kanji and using only hiragana/katakana or roman alphabet makes learning the language harder after the very beginning when your vocab starts to increase.
It works perfectly fine in older computer games that don't have the resolution to display Kanji.
Even as a non-native reader, reading 100% kana makes my eyes bleed — I wouldn’t wish that on anyone who actually knows kanji.