I find this statement a bit sly: there are plenty people in the Haskell community (me included), who bear no interest in programming language design, dependent types or type systems in general, or endless syntactic sugar debates. Such people would not find themselves comfortable within GHC Steering Committee and will be necessarily underrepresented. The public outcry with regards to the simplified subsumption was a clear indicator how detached GHC Steering Committee is and how little involvement the general public has with its proceedings. And this is not a fault of the public, because the community is never wrong.
Upd.: Detachment from users is an expected property of a committee (e. g., I’m not saying that CLC is any better). This is unlikely something that can be truly fixed, just something to bear in mind and acknowledge, not dismiss under a pretense that anyone can be elected.