I'm not surprised on both counts, sadly.
Truthis'm turned people off by not adhering to the manga's distinct art style, limpwristed OP (that was some tepid ska at best) and looking really cheep (and, in the interest of personal fist waving, was region locked for no good reason) whilst Chaos Dragon probably shooed a lot of people off when they changed Urobuchi's character's gender for seemingly no reason whatsoever. You could have gotten away with it with any other Character too if the intent was to stop it from being a sausage fest but you don't screw with the Butcher's stuff, that's a sub 300 sales paddlin'