Stroooongly disagree.
In dungeons and other group content, I like the current level of difficulty and I don't mind that players have the ability to carry each other if someone is underperforming slightly. It would be an exercise in frustration if peak performance was required of everyone at all times outside of Savage content.
However, the game needs to also have git-gud-checks, like Will of The Moon, where individual players are required to display a bare minimum of competence to proceed, so that, as the complexity and difficulty of content increases, they don't go into group content expecting to get carried all the time.