I personally would have preferred if there is a proper disclaimer that the screenshot is an approximation of how the UI would be. Or alternatively, use a more distinct art style of conveying the UI (e.g. comical/sketch lines or whatnot).

Right now its only a vague statement of "will need to look something like this", which does not imply on the originality of the image. I myself am misled that the screenshot is a legit UI.