But for the part you quoted, it's more not wanting to sacrifice your main job for DPS, rather than zero dps at all. Even if I am in tank stance full time I'd still max dps as much as possible, it's just the meta is a lot further than that, you actively sacrifice large amounts of mitigation in order for more DPS. You don't always need that mitigation, but it would make things a lot smoother/easier if you had it and my favorite thing about tanks was always being the unkillable/tough machine that made everyone healer's job easier. I am guessing that part of the role appeals to a lot of people, and is where some of the other complaints come from.
I spend like 95% of the fight out of Grit in AS4 so I could definitely make things a lot easier if I ever needed to. But if we are talking max DPS there's really not more I could ever do, I get cooldowns up before big hits and then basically pray. It would be nice to have more tricks to survive beyond that, or for the meta to not be so focused on essentially being a slightly less squishy dps.
Came back to clarity and say this but you beat me to it. Even if you're tanking everything in tank stance, you should be still maximizing DPS. The line I draw is when you have to sacrifice your survival to increase your DPS. That's not what I want to be doing as a tank. That pretty much goes counter to the tank role.
I was more getting to that you can't Path them until the final phase and the current way these are handled in the final phase means you don't alter the healing response all that much with Storm's Path vs cooldowns (or in the case of Perpetual, invulning a set). Healer response is what matters, simply mitigating for more doesn't do anything.
Oh, I stopped using Path for phases 1-4 once I realized it didn't do anything.