Step back from your political BS for a moment, and try focus on the public information.
Klaveness addressed the spectrum of radio freqs, and I’d like to embellish a bit. I’m pretty sure the decision-makers on BOXER are well aware that a drone is unmanned. However, the drone MAY of ELINT capabilities, and be able to receive & relay radio comms. Maybe it doesn’t have ELINT. However, by issuing warnings on a variety of freqs, one could presume (and hope) that the controllers of the drone, located either on another vessel or on shore, would hear the warning.
It hasn’t been disclosed, either by USA or IRAN, what kind of drone was flying. Was it big as a Predator at 5000 lbs/2250kg, which is big enough to be armed 134kg of munitions? Or was it one of the smaller ones, like their Mohajer, which is 187 lbs/85kg, which has a 15kg payload?
I don’t know if you fell asleep during your physics classes, but either one of those drones would do damage to the steel hull of BOXER - and if it hit one of the aircraft on deck, destroy that aircraft!! And the resultant fire from the aircraft destruction would cause additional damage to BOXER.
And do you want to be on the exposed flight deck if the drone was to strike?
True, there has been, so far, no reports of Kamikaze drone strikes, and I’m not privy to INTEL about the potential for same.
The commanding officer of BOXER is charged with keeping his ship, aircraft, AND CREW safe. He would be severely reprimanded for not performing his duty.
And lastly, given what you said about “propaganda value of photos like the supposed limpet mine removal”, you would discount any photos of the drone defense as the same.
Look, you probably won’t change your thoughts about Trump & the USA, - but I want you to attempt to try and open your eyes to real-world situations that happen. If you served in combat, you will understand; if you never served in combat, you will never understand.