Copp is a much better player for Panarin to be stapled too because of his work ethic and being useful away from the puck.
The PP, IMO, comes down to overpassing and Fox looking off recently. He hasn’t been as decisive or aggressive with the puck. He used to make a lot of plays down by the goal line, joining the cycle and drawing players out of position. He’s been pretty stationary on the PP lately, in my opinion.
Also I feel like if Chytil’s name was Cheddel and he was North American, people would be talking about him like Howden. Him being European gives people this “skill” bias where if he were North American he’d be a bottom six plug in everyone’s book by now. I just don’t see it with him and I don’t think a Panarin/Chytil/Kakko line is ever your 2nd line if you want to be a contender.