I'm not sure I agree with this definition of a "toy"; to me is an item used primarily for "play" (or not exclusively for "work"/"productivity"). Play is most definitely not restricted to children.
Toys aren't just for kids, just like fun isn't just for kids.
(In case you didn't get it: All of those words once meant or possibly still currently mean the opposite of the way in which they're being used in this comment. Language is what you make of it.)
It seems that you're approaching this from a mathematical logic standpoint - if we have a definition of A, then either each X is A or is not A, and since (1) definition of "toy" is based on certain characteristics and the set of "video game consoles" all have the same values for these characteristics, then they either are toys or not.
However, the things we're discussing here are based on subjective feelings and nuance, and are also recursive - in this domain, we assign the statement "X is A" a higher probability just because people in general agree with the statement "X is A" (think Wittgenstein's "meaning is use").
Using mathematical logic in such domains is not very constructive.