Yes, however what I replied to, specifically, has nothing to do with fixing the healer role but is simply a preference on gear distribution. You're now conflating healer design and how individual statics decide they want to divvy out loot. Both are subjective but only one is an actual design issue.
Red Mage is a poor example because adding a new job is far easier than completely overhauling an entire role. Likewise, Bowmage died because it was near universally hated. Which, much to many of our chagrin, is not the case for healers. It's like those bemoaning EW Summoner. Some may despise the changes but considering it's widely considered the most popular job in the game now, there isn't exactly much incentive to scale it back.
I never said they didn't. What I implied is you'd either have to add several more buttons on top of what the tanks already have or completely overhaul the healing kits to make this new design work. To be fair, I probably should have worded that better. Nevertheless, they simply aren't going to do the latter because that isn't the design philosophy they want for healers. None of which is to say I agree with it but not only have they spent two expansions downscaling the complexity of everything, they specifically addressed people asking for a return to Heavensward and said they had no intention of doing so. Considering the sheer popularity of the game right now, there isn't exactly an incentive to turn around and aim for a complex direction.
No, they are not. Outside of the casual demographic, who isn't all that concerned about healer design whatsoever, they aren't GCD healing during burst windows beyond very early prog where nobody cares about damage. They'll cover those scenarios with oGCDs and external mitigation from other roles. If Reprisal is missed, more often than not someone will die because you're not getting a shield. Now if they notice they may adjust in time but that shouldn't be the expectation when Reprisal should have been there.