Yes, it's quite unrealistic... if a woman had no arms and no legs she'd have to have a significant amount of core strength resulting in a much larger torso. ...that being said, I don't think the fellas are looking for ultra-realism
It's a toy. I've never fucked a man with a vibrating pink penis with a swirling head filled with beads and a tiny bunny shaped attachment at the base. So what?
Sex toys aren't people replacements. Fantasies aren't reality and they have their place in the human psyche. A sex toy doesn't need to reflect reality. It's a fucking toy. Don't compare yourself, weirdo.