The "rocket scientist" that is responsible for landing the craft previously worked on NASA's SMAP satellite, on the control team. One challenge faced with controlling that satellite was that several systems had to share an antenna for different purposes, and the hardware needed to be steered as part of its scanning duties. Dr. Lars Blackmore (said rocket scientist) has authored many papers on control systems, several of which discuss communications as part of it.
I would submit as my "argument from authority" (appealing to Dr. Blackmore's authority) that this particular rocket scientist is likely to have ruled out the ideas posited by any given armchair quarterback engineer, a role I know many of us like to play. The premises behind the argument are not in danger of being flawed, that I can tell; my conclusion may be, but that would just be an everyday incorrect conclusion and not an outcome from a logical fallacy.