I think what he was showing was that the claim that signals should be
protected to infinity is ridiculous.

It has no practical place in the real world.

No one was claiming protection to infinity.

Then to what point then?

Just enough so you can DX the stations you want?

The FCC has already decided to what point stations deserve protection....

And no one was making that suggestion.

Strawman argument.

Again, taking your "iboc interference" argument to it's ilogical confusion.