That's wildly flawed logic.
The Canucks are underperforming because absolutely everything that could have gone wrong with them has gone wrong. Their two star centers cannot coexist, their #2 defenseman was sidelined for months, their Vezina-finalist goaltender completely tanked his return from injury, their best goalscorer was concussed, their best grinder got cancer, and their room devolved into the "Lord of the Flies".
No one cares about pre-season predications. The reality is that the Canucks are a mess and Hughes has still dragged them into a playoff spot.