I think it's unappealing because of the way it's designed. If it's a toy that involves a full body, men are gonna want to see a woman.
NOW... If they started making a whole line of fun textured masturbators, and named them after animals, or aliens, etc... They would get some positive response.
And again blow up dolls have some negative opinions about them. Once you're spoiled w/ pleasure skins, cyber skins, and silicone, why settle for a non luxury masturbator?