First, I'm not a Skywire Tech.
* Interesting question. I'm an "Old School" electronics tech (retired) so I checked out this 'Newfangled' TV antenna.
* So are we bringing back the old 'rabbit ears'? Looks like it. But there is a big problem; Who is still broadcasting "over the air"? Here in Hawaii they stopped "Air" transmissions decades ago. They still use it as a back up in the event of a Hurricane or other Cable/Telephone wire failure. But most TV's are digital now and do not pick up analog channels.
* This year all my analog TV's stopped working as Oceanic was bought out by Spectrum. They came around searching out "loose transmissions" from homes with broken or unhooked cables. Unhooked or old TV cables will broadcast a weak TV signal that a nearby neighbor can pick up using an "Air" antenna hook up to a TV. So by "listening" for these Cable signals the neighbor can watch the same channels. (depending if they cable owner has an active account.)
* in a crowded area like a city with lots of buildings. It's probable there are lots of old cable connections that have been cut. Smaller towns may be spread out too far to catch your neighbor's cable signals.
* Spectrum did an area wide sweep checking for these "stray" signals and installed filters on to our cable line and everyone else that was inadvertently "broadcasting".
* I found some reviews from consumer reports and others that may help you understand the question.
* FYI; Elon Musk is sending up "Free World wide WiFi" system into orbit within the next 5-10 years. So you may see cable and Internet channels go the way of "Radio" (you still get car radio stations free, right?) Ahh, I remember our first TV in 1959. Only had one B&W station at the time. And it was free!