Ironically LLMs solve the MxN problem he's complaining about. He wants to get rid of the problem entirely, but fails to see the value of pointless differences.

It's the same kind of hubris that asks why we don't all speak one language. In the future we will all speak one language and we will all speak either our own or a DSL shared by only a few others, in America we will all speak English, in Japan even the torists will all speak Japanese. Very few will know English, but some will know it better than anyone.