Comment by ComputerGuru

It’s really a complete and total nothing burger. Extra code points were added, might have been an issue when we were trying to cap the total number below needing some arbitrarily fixed number of bytes for convenience, but now that’s no longer the case and they’re just a historical oddity that costs nothing to maintain and certainly don’t “haunt” in the sense of “ keep popping up and causing problems” in any way.

I appreciate the article nevertheless, of course, but I do feel that it would probably be more meaningful to someone that has at least a basic understanding of Japanese.