Dawntrail's mediatour dungeon was already cleared without healers.

[Oizen]

It's a dungeon, they're designed to be easy. Practically any dungeon in the game can be cleared day 1 without a healer, especially with a warrior tanking, so why would you expect Dawntrail to suddenly be different? I'd love if dungeons were more difficult but I'm not going to get upset and set myself up for disappointment when I already know the expansion isn't doing anything new with them. Maybe 8.0, but expect the same type of gameplay seen in Endwalker in Dawntrail.

I was promised Enhanced Encounter design, this is more of the same.
I didn't actually expect anything different though.