Not anybody. The claim was that there’s no difference between individual nonprofit types in terms of trademarking abilities: the Rust trademark policy could just as easily exist under a (c)(3).

(c)(3)s serve the public interest; (c)(6)s serve the interests of their members. But this doesn’t imply anything about a management class; it’s just a simpler and less fraught way to achieve tax-exempt status for a software community, especially one that was originally smaller.