@dsm I don't know who came up with that.
I listened to tb tell me about China and Japan fighting the Unicode Consortium over wanting different codepages "for the same character" that "looks exactly the same!" And, you know, it's one thing for an engineer to misjudge a situation by forgetting politics and human interactions, it's another when it's a committee of standards dinguses do it because they're eyeballin' it and they don't remember that these characters change due to politics but they want to conserve the 4.2 billion slots FOR SHIT LIKE ELVISH AND KLINGON AND "PREGNANT BEARDED MAN WITH ADJUSTABLE SKIN TONE AND HAIR STYLES AND COLORS" because Twitter dipshits' politics affect decisions but not "The Chinese government has changed all of these characters' official renderings and now all of the other Asian languages that use Chinese letters have retroactively illegible text".
So, I figure that it was some guy that read the Wikipedia entry for Hangul and said "Let's just make them Korean letters combine like lego to save space so that we can add 'with visible erection' modifiers to the emoji code pages and the boner can be different sizes".