I didn't have that problem with the raid... it's just weird how painsmith is the hardest boss in the middle of the instance. It's also a lot more healer intensive then most raids.It's even worse than that. It's not that they didn't KNOW things were flawed - they did. But they simply wanted to stick with their "engagement metric" mechanics like conduit energy and whatnot for as long as possible. It's all about massaging the visuals, keeping things locked into their agenda for as long as possible and then cashing in on the "fix" when the breaking points is reached.
It's exactly what happened with Legion legendaries. It's exactly what happened with BFA corruption. And so on and so forth.
That's the real problem at Blizzard right now: they have plenty of very capable people, but they also have a team of savvy executives who push a very specific design goal onto everything. And that goal doesn't really care that much about the long-term health of the game - it cares a lot more about medium-term metrics that make investors happy. This is a decades-old game after all, and it's clear that a decaying husk like this won't be a cash cow forever. So they're doing what they can to squeeze what they can. It makes business sense, after a fashion; but it's a kick in the 'nads for players who are deeply invested into the franchise.
To me personally what's more frightening than the whole conduit energy/covenant/whatever stuff is the fact that the raid wasn't that great. So far WoW was always "redeemed" by having stellar endgame PvE content despite the, uh, "rocky" road of mechanical contrivance. But SoD was a major letdown for a lot of people, and it's the first raid in a LONG time where I'm looking at things and just going "you know what, this doesn't really look all that fun to do".