Let's agree to disagree then. I left a WM +10 one hour ago after 5% enemy forces completion because the tank used the first obelisk then decided to drag around the blob boss in the dungeon (to the goliath, then to the sisters). Of course it's grievous week, of course dps are slowed and hurt by the tentacles, and of course the blob boss vomits toxic aoe in narrow corridors.
I'm a healer main and I'm prepared for the grievous shitshow, but not to this extent. It doesn't require any skill to copy-paste the optimal route, you're right. But I've played with so questionable tanks the last couple of weeks that I'm grateful if the tank knows at least the route.
Then work for it then?