Given that buggery is considered a “right” — whatever passed for reasoning there is bound to pass for reasoning when considering any toy, unless it is an item which can be proven physically harmful (and even then the masochist sector may demur). I detest this state of affairs, but it seems that hole has been drilled (no pun intended).
Look on the upside.
Without deviant sex devices, we’d have no hilarious “bizarre objects found in x-rays” websites to laugh at.