There have been notable Japanese people who argued that the Japanese writing sys...

There have been notable Japanese people who argued that the Japanese writing system should adopt Latin alphabets since ~150 years ago.

I'm personally fine with both romaji and kana (learning kana is not a big cognitive burden anyways).

I'm even fine with kanji (or Latin or anything) if people learn it voluntarily. What's not ok is kids being forced to learn them in school.