said by PDXPLT :

I didn't read them say that. They'll "make concessions" to those that complain, like HAM's, because Part 15 rules they have to. If a shortwave radio or AM time signal listener exists in the area, and they complain, under those same rules they'll need to address it, too. But if no one complains, then there can be no "harmful interference". And a Part 15 operator needs to mitigate harmful interference, not hypothetical interference.

And realistically, how many in their area will use shortwave radio, especially these days when you can stream thingsw from all over the world. And if no one's using it in this area, why waste the spectrum and stop it from being used for Part 15 applications? In the view of the FCC, spectrum should be utilized to the fullest extent.