but I suspect that had Harris asked for just one for the aircrew, he would have got it
In a sense he got it, as the Aircrew Europe Star was only awarded to aircrews, not their supporting groundcrews. However although the majority of its recipients were from Bomber Command, all flying operations over the European mainland counted, including fighter operations, SOE flights etc. I have even seen an ACE star awarded to an Able Seaman RN who was the gunner on a Swordfish. I understood he was in action over the beaches at Dunkirk, but never had that verified.
I still think it highly unlikely he would have got a medal purely for "his" aircrews, as it would have departed from the principle of theatre awards only.