i hate that flags are anonymous but appeals aren't
Why? Have you ever been harassed for appealing something?
And... yeah, this really isn't something that would make it through the mod queue, even a couple years ago when standards were lower. It's not so much that "there's something blatantly off" (although the way the hand is drawn, or the heavily asymmetric breasts get close), it's that it's just a plain low-quality sketch given just a first pass of coloring with an almost total lack of effort to put in shading, and has no real positives to counterbalance its negatives.
The only reasoning I can glean from people trying argue for this image is that they like the character in the anime, not the image, itself, and it's not like this is the only image of this character that exists or will exist.