Is there some unspoken rule to not use Esuna/Leech?

[Teryaani]

As healer I remove everything that can be removed, at least as SCH I don't have mana problems
The only problem I have is to know what I need to remove in an alliance, I know that they have a debuff because they have that red ▼, but sometimes it's a unremovable debuff ((like resurrect weakness))
I remember that once I get blamed in Brayflox for not remove the poison in the last boss ((the tank was a flan, at 4 stacks he nearly died in each tick))... SCH don't have Leech until nv 40 ;-;

I feel you on that. It got bad enough that my wife, who mains SCH, started out bray runs with "Just a reminder, I can't do anything about the debuff".

Depends on the dungeon and HP. I've seen far too many healers who refuse to Leeches/Esuna when everybody is at a high HP amount. I'm pretty sure those are the moments he's referring to.

That's what I was thinking too. Healing is situational, but when that situation is okay and the healer is standing around waiting for damage to heal and your dps has a paralysis debuff, they aren't really trying