I was just talking with Zoe and was trying to explain how I think it may read as gen for the very reasons Rodney's OK with John's death on some level, i.e., the slash tropes kind of require the story to be all about the John rather than about the fact that most of us have lives above and beyond one other person...

And yet, I think this is one of my strongest reasons for liking the story - this is a slash scenario I have a fascination with and yet rarely get to see in fic, one member of an OTP after the other dies, functioning and going on, never the same but dealing with the loss and moving on with life. So in that sense, I'm resistant to reading it as gen.