I'm afraid I/we are detracting from the main point of the thread, so maybe I'll leave off with this post, but:
Right now and in all circumstances, the disclaimer provides zero clarity. Who is it for? The person who would take offense anyway? We already know there is no stopping such offenses. The person who wouldn't have taken offense? Well, they weren't going to anyway so it achieves nothing there. Some neutral third party gazing down on our interactions and making solemn judgement of the way we comport ourselves?
I mean, look - say it's unnecessary, as in your final remark. If the worst we can say is, "It seems like you're being clearer than you need to be," I don't think that's much of a flaw - and if it does assuage someone's concerns as to intent, that seems worth the cost. Tone qualifiers can be helpful in written form, especially given we're not all professional writers (and, for that matter, don't even all share the same native tongue) - again, better to err on the side of too much clarity than too little.
Back on topic: the Chejop piece is the only one I really disliked. Volfer's bit is great, and I enjoyed the dark humor in the Physician's ficlet. Some of the others it was hard to divide the fiction from the art; that chapter image of the statue of the Unconquered Sun is so great I don't really remember whether I liked the fic or not.
Prince Diamond's piece I think was underwhelming? I don't remember whether that changed from the backer release.