Earlier quoted context omitted.
Nor is it unreasonable to "unify" Latin, Greek and Cyrilic: Cyrillic ПФ vs Greek ΠΦ Cyrillic АВ vs Latin AB Obviously using ω for w (as he does) is stupid, but his reducto-ad-absurdum is not particularly absurd.
Not unifying them means that the fonts automatically work when you mix text/names written in these alphabets. It also means that mathematical/physical/chemical stuff (that typically uses Latin and Greek letters together) will just work. There is a similar reasoning behind all the mathematical alphabets in Unicode. Furthermore, Unicode was supposed to handle transcoding from all important preexisting encodings to Unic…
These are already completely separate symbols. Ignoring precomposition, there are at least 4 different lowercase omegas in unicode: APL (⍵ U+2375 "APL FUNCTIONAL SYMBOL OMEGA"), cyrillic (ѡ U+0461 "CYRILLIC SMALL LETTER OMEGA"), greek (ω U+03C9 "GREEK SMALL LETTER OMEGA") and Mathematics (𝜔 U+1D714 "MATHEMATICAL ITALIC SMALL OMEGA").