I wonder if the author has submitted a proposal to get the missing glyph for their name added. You don't need to be a member of the consortium to propose adding a missing glyph/updating the standard. The point of the committee as I understand it isn't to be an expert in all forms of writing, but to take the recommendations from scholars/experts and get a working implementation, though more diverse representation of language groups would definitely be a positive change.
http://unicode.org/pending/proposals.html
Also, the CJK unification project sounds horrible.
It sounds like the glyph is in unicode already, but expressed using combining characters?
Imagine if the letter Q had been left out of Unicode's Latin alphabet. The argument against it is that it can be written with a capital O combined with a comma. (That's going to play hell with naive sorting algorithms, of course, but oh well.) Oh, and also imagine your name is Quentin.
My first choice as theoretical Quentin wouldn't be "how can I frame this accidental, perhaps even flagrantly disrespectful omission as antiprogressive and dissect the credentials, experience, and ethnicity of the people who made the mistake via culture essay," it would probably be "where do I issue a pull request to fix this mistake or in what way can I help?"
Maybe that's just me. I look forward to the future where any mistake not involving a straight white Anglo-Saxon man or his customs can be built up as antiprogressive agenda, and the best advocacy is taking the people who made them down rather than fixing the problem that is the, you know, problem.
(As an aside, imagine my surprise to see a Model View Culture link on HN given how much MVC absolutely hates and criticizes HN, including a weekly "worst of HN" comment dissection.)
I have a proposal of my own in the works to add a character to Unicode, so I'll see how it goes. There's a discussion of how someone successfully got the power symbol added to Unicode at https://github.com/jloughry/Unicode so take a look if you're thinking of proposing a character.