Yes. the tuning is so fine that an entire role has been rendered obsolete in Endwalker MSQ. There is not a single dungeon throughout this entire expansion three of the four tanks cannot heal themselves through with very little difficulty. While we all like to meme on the absurdity of Bloodwhetting in a dungeon, Paladin and Gunbreaker are just as capable of solo-ing everything. Even Dark Knight can solo dungeons. They just need a good DPS group for pulls and some spot heals from a Red Mage. The fact tanks can accomplish this means healers are literal gimped DPS. If you're not spamming your AoE, you're actually less useful than Alphinaud or Urianger who will DPS. The latter, surprisingly, does more damage in some of the leveling dungeons than geared players.
Regardless of how you feel about the MSQ combat as a whole. I don't know how anyone can justify the tuning of Endwalker when it reduces an entire role to their secondary utility. Nevermind the fact prior dungeons have suffered so much power creep, they barely even tickle. I've gone through old Heavensward dungeons using less than five heals on new tank players. Bosses many dungeons can't even get through their scripted mechanics because they explode so fast. Once again, nobody is asking for the MSQ to be immensely hard or anything remotely equivalent. Many of us want our respective roles to feel like they have a purpose. Healers right now have almost zero relevancy.