If spotbeam size matters
I guess this is using EXISTING 5G bands?
That means it wouldn't work if you're just a little ways out of cellular range, because it couldn't limit its spot beam enough to avoid interfering with the licensed use of the band by the terrestrial 5G cellular towers.
I guess if it is the same carrier it may not matter, but it seems like there would be a lot of blank spots in the places you REALLY want service, though you'd have no problem using it when you are well and truly in the middle of the nowhere with no 5G coverage (at least on the particular 5G band(s) they use) for dozens of miles in any direction.
It will be interesting to see what kind of issues pop up in the places they roll this out.