The thing with Yoshida and the devs is that you pretty much have to take most of what they say with a grain of salt. Be it both good or bad.

A lot of things and QoL features we now have in the current game was originally stated previously that it was "impossible" to implement. At the time.

Considering how healers toolkit lacks much dps options besides one or 2 attack spells nowadays, I would believe that hes and the job design team are still in that mindset that healers should be healing more than dpsing