Eh not that I'm progressed at all in this game, but this is honestly an attitude you see at end game very often. The same way you get tanks who are control freaks or DPS hitting the bong between pulls you see this general need to be handled with kid gloves by healers. They tend to develop victim complexes and quickly get super defensive. That's why this thread is pretty funny, it's sort of an expression of that each of these healers have the skill but are arguing it's technically not required, it's just that every healer chooses to use it and it's the standard but it's still not required, please stop bullying healers.
It's the same kind of responses you'd see in a "as DPS if you tunnel vision and die on fights you're holding your team back", it's an inarguable statement but people still will come around to defend their class, like they're honorbound.
EDIT: I will say healers get a lot of undeserved blame thrown at them, but some of the mental gymnastics put on display in this thread (or any thread critical of any role) really have brought for a lot of the worst out