"Han unification" (deciding that Chinese and Japanese characters were 'basically the same' and could be represented with the same set of codepoints) was a terri

"Han unification" (deciding that Chinese and Japanese characters were 'basically the same' and could be represented with the same set of codepoints) was a terrible idea, yes, mainly brought from the Unicode foundation not being run by people who spoke or wrote either language, and not wanting to "waste" their limited code points in the BMP on languages using an inconvenient number of characters.