I think 'foist' referred to the way minorities seem to not only (quite reasonably) seek acceptance, but also to almost try and convert the rest of the planet.
Cyclists, dog owners, vegans, Accrington Stanley fans, lesser-known religions, gluten intolerants, Twitterers, political obsessives et al, they all do it. I get so bored talking about my interests to novices that I keep them to myself. I wish others would, until people show an interest. A discreet badge will suffice. It shows you support a movement without ramming the concept down the throats of all. They actually alienate most people from their cause.
I will add that this comment is not directed at anyone in particular. I will, of course, keep my views to myself, beyond wearing a discreet badge!
Martin