The game has no accountability, maybe not until you go to premade groups for harder content (although in farm groups grey DPS could pass here and there). In WoW I would probably sit and spam M+ at max+ reward level for fun and gear. All bad players would be excluded due to scoring system built in (and external). Some runs fail, some explicitly end up with to weak group, people get salty... Here I tend to spam dungeons as well (or get Athenas in a row when getting tempted for the raid roulette) - it's not high M+ level but also isn't complete zero level of initial WoW difficulties (normal, HC, M0) - yet in FF14 I don't really care if the people in the run are good, top notch (unless it goes super bad which is super rare). Others seems to have the same approach. In WoW where accountability is core people would dunk on a sprout for being "trash" and even without that its annoying when M+ run fails, people leave...
FF14 approach has it benefits but also has this healer problem. As the game is chill we won't get a shift into accountability, at best they will implement much better Hall of Novice and make it mandatory in the new starting MSQ they hinted at doing (that would bypass the initial story arc; if it actually happens instead of copy-pasta and +10 levels). The next thing is getting some changes in the buttons current healers have to make them more fun (while not expecting any paradigm shift). And not like they could for example drop a sort of variant/criterion dungeon that is more WoW style where the mechanics aren't 3D chess but rather constant flow of damage taken and more normal mechanics on top of them. Testing a different approach, giving more spotlight to healers (and all-WAR groups).
When I'm healing, sprout in agony, it's solid 1-2. When I'm dropping all those "precious" Glare IV - like 6...