As far as I understand, making 2 sets of Legendary armour of the same weight was always a waste of materials, even before the concept of the Legendary Armoury.
From what I can tell, the OP isn't angry that everyone will now freely get the convenience that they paid materials for by making multiple sets, they are angry that some people that paid materials for convenience might be getting 'compensated'. Where does it say exactly that there will be 'compensation'?