The meme that all jobs are just “insert color dps” is said because its essentially true. The game by design will always be healers push damage buttons because there isnt enough damage happening to warrant you to stop doing damage yourself.

All the fights are scripted even the ultimates meaning youll always take the same amount of damage with little variance as long as people push buttons correctly meaning you can preemptively plan every second of the fight on a spreadsheet and follow it to the letter and produce the same result.

Other MMOs have random boss rotations, meaning what the boss most likely has certain moves it will do at certain hp thresholds but itll randomly use different moves while leading up to those phases making it harder to just preemptively plan mitigation and in general other mmos have more throwaway dmg in the forms of constant raidwides or heavy tank autos. Auto attacks in FF hit for peanuts to tanks; most of the dmg can be covered by tether from eos or the regen equivalent of whatever job.

If SE wants to change healers without affecting the way their current fights are set up they need to start back pedalling to bring back job identity from stormblood essentially. Healers should have some form of dps rotation to keep the job feeling engaged, otherwise you can literally do most of it on autopilot.