After all, Ethiopic was encoded as a syllabary just because the vowel points happen to have become attached to the base characters.
Ridiculous. This happened centuries ago, and it is not "why" Ethiopic was encoded as a syllabary. It was encoded as a syllabary because it is a syllabary.
But the floodgates have already been opened - not just Ethiopic but Greek extended, much of Latin extended, the Korean syllables which started this discussion, the small amount of precomposed Hebrew which we already have, etc. People have tried to force them shut, and with good reason. But don't accuse me of starting something new.
You are, because the floodgates, while once open, have been closed by normalization.
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Michael Everson * * Everson Typography * * http://www.evertype.com