It is a serious question. I was thinking about new cruisers, and those that haven't cruised in a long time. I would bet some don't even realize there's an automatic gratuity option.
I do like your idea of adding "plus gratuities". At least it would warn new cruisers that they aren't necessarily looking at the total cost.
How is this (daily gratuity) known ahead of time? I just started a mock booking, and I got as far as entering the guests' information, and it's not shown.
Not sure about the gratuities, but that steak does NOT look appetizing, at least to me! In particular, the layer of fat on the side closest to the camera.