A voice from the shadows:
"I know how these things work, and I've had enough. Okay, guy. Assuming 'for the sake of the argument' that some substantial part of your claims are true, what do you think is a real, genuine problem with the oeuvre?"
"Appropriation". Among my "author-functions" is an Asian-American identity, a couple of Asian identities, noms des plumes which present me as Jewish, Arab, a "gay" version of me, and European and "Latinoamerican" pseudonyms. I'm really... none of these things, and it would "go hard" with many people who want to communicate the valuable insights of their group to the world. (There's not a Black or an Indian one.)
"Yeah, I guess! OMFG."
Basically... the easiest slide is with Asianness (there's a word like "smart otaku", get it?) but yeah, honestly it wouldn't "go down smooth" under normal circumstances. Some background: in my "descent into authorship", it seemed that Forrest/Asa Carter of *The Education of Little Tree* had been very harshly treated (the book is not too wide of the mark for my "home environment", and many people who are not ethnically Native have a great fondness for the scenes in the book). The curtains were "ripped back" to reveal a racist white man caricaturing Natives, but the problem is that the "genuine article" would really be turns out to be... Forrest/Asa Carter, who would "not be perfect" as a person but roughly totally congruent with the verisimilitude of the book. "Nothing Was Delivered".
So there is some genuine question when "authenticity" and "appropriation" are being discussed of what is really at stake.
"I am... not buying it. And I'm just not that 'multi-cultural', even."
The "metatheory" beyond that is that the themes addressed by these "avatars" would be turned over to more authentic, modern figures actually solidly part of the group; to the extent this was not possible, "version control" would remain with activists from the group itself. (My writing on Black history works like this; you'd ask a Black person first and most of all what they thought of Frederick Douglass, James Brown et al.) I was also tired of the "Great White Hero" who, "ironically" or no, peopled the fiction of the turn of the century and it was a way to avoid this.