Ok lets be clear here...
First, Space X's application is a shit show it is basically a space grab and should be rejected until they actually specify exactly what they are doing, which bandwidths they are claiming, and which orbits.
Second, Blue Origin's letter is also a shit show and is absolutely pathetic.
In dealing with a regulator like the FCC, Blue Origin could have easily pointed out the problems with the Space X application without turning it into a personal attack (ok it's a corporation not a person, but you know what i mean). That's what consultations periods are for, for people to put forth reasoned arguments for or against something happening. You dont attack the character of the firm your arguing against, especially when your own firm (or its owner) are clearly going to come across as major hypocrites.
Play the Ball, not the Man. Or dont play at all...
Hopefully the FCC, tells Blue Origin their letter is unhelpful and useless. AND turns around and tells Space X to come back with a proper proposal....