And this is an example of everything that's wrong with this discussion and why we won't get meaningful change: The side of the debate that cannot seriously talk with the other, instead preferring to insult the other side and assume their motivations are laziness or badness instead of that they actually like different things.
No one has a problem with "having something to engage your brain", some don't even mind "outside healing". And not everyone is against a "skill ceiling to reach for".
The issues are they aren't for those things LIKE YOU ARE.
MP management is a skill ceiling to reach for.
Choosing the optimal heal for a situation when it actually matters is a skill ceiling and something to engage your brain with that is INSIDE healing.
But those things don't matter to you, because they aren't non-healing, and you seem to want Healers to be about non-healing actions and optimization.
Moreover, different people like different things. To some people, they don't like damage buttons - but they'd love more buff buttons. That seems to be true of a lot of people, actually. Most people don't even mind a few more damage buttons, even those that don't care for damage dealing, but they don't want ONLY a few more damage buttons, as that doesn't address our main issues of not enough healing being needed by encounters and 1/0 Healer clears. It's certainly not an actual fix. "So you won't be bored" doesn't prevent 0 Healer clears unless the thing you're not bored about is something that can't be replicated without a Healer - that is, healing.
I know you know this, because I've told you before, many times. You prefer arguing against caricature and straw men because they (in your mind) are easy to defeat. But this is why you get nothing. Because you aren't willing to see what other people want, and so you can't offer real compromises because of those blinders.
Unfortunately, Yoshi P and the Devs are aware of the opposed arguments. Both the "more damage buttons" and the "more healing requirement" ones. So, too, are they likely aware of the "leave things alone" arguments.
We'll see, in time, what (if anything) they plan to do about it. But for a surety, it probably isn't what you think/want alone/in vacuum.
EDIT:
So much this. WHM has less accessible party mit than BLM. Let that sink in. BLM has Addle on 90 sec where WHM has Temperance on 2 min...and nothing else. (Yes, Temperance is more powerful, but less available...and we're comparing with BLACK MAGE, it shouldn't even be close enough for that to be a relevant "But ackshually..." in the first place!)
AST at least gets some Collective Unconscious and a Neutral Sect AOE shield, but WHM has among the weakest party mitigation in the entire game. Give it Protect/Shell/Wall, for crying out loud! SOMETHING.
This is yet another problem with encounter design - it's shifted away from healing checks (lots of healing needed, WHM's specialty) and into mitigation checks...then given a bunch of mitigation (and healing) to Tanks and DPSers, and taken most of it FROM the Healers in the process. I can understand Tanks having mitigation, but massive healing, too? And DPSers having both? It's a failure of encounter design and Job design. The Healer is who is going to get complained to when people die, so may as well at least give us the lion's share of the mitigation so we can do something about it.