For the same reasons engineers are having a global "reduced materials day".I get a kick out of everyone who is working like a dog to get to Rear Admiral, even if they don't want to purchase the Corvette, stating perhaps they will at a latter date. And upon finishing the trip, coming to a complete stop.
One should ask themselves, WHY; Why after all these years, why now did Fdev deliberately come up with this process of getting everyone and anyone whom wishs. A considerably faster grind to Admiralty. Though most will take this deliberate process of unknowing reasoning and stop at Rear Admiral. Perhaps, stopping at Rear Admiral isn't such a good idea. Perhaps after all these years of Admiralty not have any credence, thus making the arduous journey from Rear Admiral to Admiral a pretty much waste of time except to those that dared to go the additional distance and managed to finish it. Perhaps I'm correct, and one of the steps of obtaining a carrier is one must be an Admiral.
Because you need something to make the players come back online and play. MSPaint-jobs aren't really doing the trick these days anymore.