So the zodiac upgrades... (kind of ranty post)

[Eardstapa]

They're easy to get. Time consuming, yes. Difficult? No. Therefore, they are casual weapons.

Let's use your logic in another argument. Final coil weapons are easy to get. Difficult? Only to find a competent static. Time consuming? Sure. Therefore, they are just as casual. And if we go to the lodestone bull, remember, some of us are not fortunate enough to join statics due to work.