Quoting: Drai_By_shooting
He performed better then that only with McDavid in less then 1 seasons worth of games and has since lost the chemistry. Hes being paid a million and change annually more then hes ever been worth(other than that heater) and is currently worth. You need to be realistic, not a fanboy. No insult intended
Then lets look at my statement from a factual, realistic POV.
"... he performed like a top-6 goal scorer the previous 2 years..."
So we're looking at goal-scoring in 2018-19 and 2019-20.
At 5v5, Kassian scored 27 goals over those 2 years, good for 77th (tied) in the league. Some of the names he was tied with are significant: Malkin, Barzal, Giroux, Wheeler, Forsberg and Landeskog, to name a few. Does he owe a lot of that to McDavid? Of course, I'm not suggesting he's as good as those other guys. But not everyone can score while playing with McDavid, and he's the one that put the puck into the net, you can't devalue that altogether. It's not like racking up 2nd assists while playing with Lemieux and Jagr, for instance.
Broken down by per-sixty, we see that his contribution to Oilers scoring was indeed significant:
Draisaitl: 1.18 G/60
McDavid: 1.12
Nugent-Hopkins: 0.87
Kassian: 0.84
Yamamoto: 0.78
BTW, he played 1091:58 (57%) with McDavid and scored at a pace of 1.10 G/60.
He also played 403:42 (21%) with Kyle Brodziak and scored at a pace of 0.74 G/60.
He's not useless. He struggled this year due to injuries. If healthy he's worth his AAV even if you ignore the physical aspect of his game.