Strongly disagree, jobs get optimisation from spell speed, SMN and BLM both have sps builds and healers have to base their spell speed on their level of optimisation to avoid running out of mana on excessive GCD heals

Spell speed isn’t a bad mechanic it just suffers from the combo of crit dominance and the lack of meaningful optimisation in most rotations outside of BLM actually giving you options to use it in a variety of different ways