Regardless of your interpretation of what "media" entails, though, I'm not sure how statues or toys could fit into this description:
"mail books, sound recordings, recorded video tapes, printed music, and recorded computer-readable media (such as CDs, DVDs, and diskettes)"
Seems pretty unambiguous as to what is allowed there to me. I mean, televisions are a means of communicating media, as are computers, but they aren't listed as acceptable items to be transmitted via Media Mail and I suspect that a postal employee wouldn't think that they were (though I don't know for sure).
Whatever the case, my guess is that the people who ship these things print out the labels online finding the cheapest possible option, and that usually ends up being media mail, and that's that. I doubt they sit there thinking about what Media Mail is supposed to be used for, or losing much sleep over whether they are violating the spirit or letter of the policy or not