I don't know which Tumblr crowd Nexus is hanging out with (or not, as the case may be), but most of the people on the site (myself included) are reasonable people who won't make an issue out of nothing. The circles which demean Rick Remender for having Sam Wilson sleep with an underage girl (pfft) are a small part of it. Personally I feel cisgender is a logical term, but the problem existing is the people who know the term are probably LGBT, or at least part of a LGBT support program or something like that. It doesn't really have common usage at all so it will go over a lot of peoples heads. I don't think we need to murder people for not using the term, but some way of making it a little more common would be good. It does however get on my nerves when someone's blog has in the description "cisgender male". Like, thanks, I kind of assumed that already.
Always take what South Park says with a grain of salt, otherwise you'd be bombing Canada and full of Anti-Semitism.
~This is all very tangential but these are my thoughts~