As much as I do agree with you, I have to strongly dismiss this statement right now.
I have a timed 16 Lower and attempted 20 Lower.
We bricked the 20 Lower on 2nd boss (Moroes) because the garrote was chunking us for around 23% hp per second and the healer wasn’t able to do 50k hps even with lust.
We’re using meta comp with meta route, and we had plenty of time left after Opera boss but we kinda figured the wipe would be Moroes.
Maiden isn’t bad anymore, they’ve reduced the absorb so much if you’re not getting through it without lust you’re either undergeared or don’t know how to play your class, simply put.
Attumen is good too, I think the spectral charge leaves room to be desired, either less horses or make it known where they’re going to spawn from slightly before they appear, or make their damage 10% less so it’s not a 1 shot.
NOW, if you want a really horrifyingly bad experience, do a 20 Workshop, we just bricked ours because we had the add spawn at the same time 2 discs went right through the party and there’s zero chance of survival. The discs hit for roughly 95% of your health right now, (afaik back in S4 BFA they dealt about 45% of your health in damage), and the add is dealing around 5% dps.
Point being, someone else in this thread said the developers simply don’t play the game and rely solely on feedback in which for the most part they ignore, I think you’re spot on. There’s no way a single Blizzard employee, or external QA testing company has played S4 content whatsoever.
Edit: Opera boss this week can also glitch, if the Bubble Blast cast isn’t interrupted when the Murloc add hits 1% hp, it’ll revert back to its spawn location and infinitely cast Bubble blast and you can never interrupt it because it has full immunity at this point, CC, Interrupt and Stun do not stop it.