Given that the person himself didn’t desire such a thing either, he would receive such things like gems and treasures from Margraviate Breithilde instead.
Still, as one would expect, without even that there would be rumors about His Majesty not recognizing his achievements decently in the end.
Also, although it was the Twin Dragon medal, it was still just a medal and you couldn’t just not bestow anything simply because the target was a retainer either