Ok, I'll nibble.
Because the highest weighted slots are - Weapons, Helm, Shoulders, Chest.
One of these slots are farmable, as well as every other standard gearpiece. Azerite, with a much higher power budget applied to them isn't. 380 in the grand scheme of things is trash, that's a weeks timelock out wasted on something that could of fallen on something in a much more important slot. That's also made worse that the chest is weighted towards these 2 things, making it even worse both in feeling and in actuality.