It’s just new players to the job/dungeon probably.
I don’t think it’s the dungeon’s fault, it just happens to be a dungeon every EW player will have unlocked.
It’s got some doom mechanics that not everyone knows, especially if they are just now getting to 90 content.

On the internet, assume the best possible explanation, not the worst. If they are new to healing, people are going to die. Don’t take it personally. Only give advice out of kindness if you think you know something that they don’t, like a doom mechanic.
More likely than not, you just try again and get the clear