In addition to the quote used in the title, the box declares its contents " Physical exercise ideal Wii accessories product and good for health," while assuring prospective buyers that there is "no hazaro." If it's both ideal and free from hazaro, we see no reason not to buy this!
We were going to make a joke about playing Golden Axe with the axe attachment, but we remembered that the Wiimote is terrible for the Genesis games with which it is functional, meaning that in all likelihood you'd have the axe sitting on your lap as you played. And that would be ridiculous.
[Update: corrected the bit about Wiimote incompatibility.]