Scam. Illegal, no, not even close. Just crummy and to be avoided.
All UHF antennas receive digital channels (when ran into a digital tuner, of course). Some do a better job than others, and most cheap rabbit ears, unless you're very close to the towers, are fail. But a UHF antenna from 1980 is just as good as any.
All of those channels appear to be over-the-air, so any antenna meeting the criteria above would be good for them. Given that buying it outright is $299.99, for that cost you can get a roofmount that would kick the ass of this piddly thing that probably beats most internal antennas but is overpriced in comparison to competing models.
Made you look! (Excuse me while I silence my childish giggling.) Now... where was I? Oh yeah! For any of you who like card games I recommend Lunch Money. No it's not like Magic, or any of the collectible ones.