If people want to be tank and feel invinc8ble, then chilax for 2 months, get your vut gear and eso gear and start savage when the dps have the gear to meet dps checks on their own with their own gear. This goes for the healers that only want to heal as well. If you don't care to push the limits of a job then you're not going to be pushing the limits of content (cutting edge, doing stuff under the designed ilvl etc). There's nothing wrong with that, but that's what it is.

As for if tanks/heals SHOULD be forced into cutting corners on their primary function in order to dps, that's a mater if taste. Some tanks/heals really thoroughly enjoy that aspect of the current meta. Some dont. I'd devs reverse that meta it will just flip flop the groups that are happy/unhappy. That's not an improvement to the game. Unless someone has a statistically valid poll with a representative sample of the entire playerbase, then we don't know if 1 group is significantly larger than the other. So completely changing the way tanks and heals work ( It's the same fight in that arena) is silly without that information.

So for now if you don't like the dps corner cutting meta for tanks and healers, just relax until it's over geared so DD jobs don't need tabk/heal dps to win fights. You can wear all the vit in tank stance all day and laugh as bosses fail to kill you. But you can't do that until dps can stand on their own.