Abstruse, eh? Your second paragraph illustrates a problem I often see on the 'New Left': we only take issue with the jargon of others.  Nowhere is jargon more mandatory than in conversations about gender. I didn't create that problem; I've learned the vocabulary after getting scolded when describing my own experiences by folks who reinvent the language we use to describe ourselves every year on tumblr. Perhaps I felt obliged to use 'jargon' because this article employs it in spades, with everything from 'marginalized others' to 'stereotypical narratives' to 'male privilege'. Adichie herself is arguably being taken to task because she doesn't use the same 'jargon' that dominates North American conversations about gender.
Is it so wrong for someone to say that they would rather see a non-white, non-American author critiqued for a comment about trans women by a trans woman who isn't white? It sure is propitious to bypass engaging with someone's point by nitpicking about their language.