They don't bring it as hybrid, they bring as a DD.

They don't care that it can heal, they don't care that it can diamondhide, they don't care that it can hastega.

Let me put taht another way, saying rdm should melee better because blu is a hybrid too is like saying rdm should melee better because nin is a hybrid. People bring these jobs for one purpose, and when they can't bring them for that purpose, they...don't bring them.