[DEV Question] Why is this allowed?

[ErryK]

That's another point...Since jobs only have one main stat, it should be easy to restrict accessories to the corresponding job in the first place.
And to do the same with gatherer/crafter's gear.

The issue there is glamour/PvP, some fending accessories are BiS for a high-HP build of a DPS or a healer, so that you can survive a LB.