You've just now used the term, "invalid consent." My presentation is that "consent is consent, manipulated or not." And where it comes to "governance by consensus", there is ZERO relevance to manipulation or not, as those who are in charge and doing the manipulation are the ones manufacturing the consent by which to govern by consensus.
So if you wish to bring up the word, "invalid consent," I'm not afraid of the word "invalid." Rather, as it comes to my values and the "good" I wish to see in the world, "consensus" as a whole is invalid except to those points at which it intersects with my values. The word "invalid" is not a problem for me.