If you bothered to read. you would have noticed the word "everything."
But if you want me to break it down, I can.
-The choice/direction to give such abilities to roles outside of healer encroaches on the role.
This one is strange. This is like saying Scholar shouldn't have damage mitigation because it encroaches on Tank roles. Or White Mage shouldn't have any DPS capabilities. It's not and has never been that type of game.
-Every job in FFXIV has a 'filler GCD' skill that they press when there are no other requirements. No role in the game pushes this skill more than healer. Not by a long shot. Our offensive capability should still feel dynamic and rewarding. Yes, we are healers, but we are also casters.
Literally contradicts the first point.
-Barrier/Pure healer split is largely redundant. All healers essentially play the same with the exception of few and far between niche abilities.
Contextual. All Tanks play the same way, just like all Mag and Phys DPS play the same way.
-These are not only abundant, but exceptionally powerful. This in addition to self-sustain on other roles reduces the dynamic of healing comrades.
An outright lie. A reduction from what? Zero?
-Healers should feel like they have a place in all forms of content. It is understandable that difficulty can't be so great as to bar progression of story-based content. However, innovative means should still be employed to make greater/full use of abilities.
Player error.