Good find - though FYI - most of this is on the air with your regular antenna and the others also other Roku apps - such as the Roku Channel’s live streaming channels section, STIRR TV, PlutoTV, and multiple other apps that have added a live streaming channels section.
Closer to Dallas, yes they would have been simply seen through
normal antenna. Now living further north, a hassle to receive. And Cozi, Movies! TV Network were two favorites.
No more tears!