Maybe it's because I primarily do pugging so I can't account for the skill of the other healer as well as some other party members, but if I abstained from hardcasting a lot in ex/savage we would die. Like literally forget about even getting the boss to 50% never mind killing it.
You're missing the point. The point I'm making is that if you use the Aetherflow mechanic for more than just mana management you can do more with sch. Such as on demand ogcd burst healing, which is sometimes exactly what the party needs. Emergency tactics is handy but it takes .5 seconds for the game to realise you have clicked it and unless you swiftcast you also have to add in casting time. Obviously you can hardcast in advance if you know when the damage is going to hit, but sometimes you need to fit as much healing as you can in the few gcds you have to work with for a particular mechanic and the Aetherflow heals can be excellent for that.
And the other point I'm making is it's unfair on the other healer to force them to work harder if you can find the room to use Aetherflow for more than just mana management but choose not to. Our role is called healer, not mana hoarder.
Despite the significant drop in mana efficiency sch has gotten from HW to SB, I can still make it work and unless I have to burn loads of mana on ressing I still have enough mana to heal properly without using Aetherflow stacks primarily for mana management. It's just a bit disheartening to see whms consistently on very high mana even though they're certainly not slacking at all