Yeah, if I could make assumptions like "because of one bad season" I'm sure I could win a lot of arguments too. Exactly what premise do you base the desire to trade Duchene simply to be JUST this season? Why is it illogical to think, or simply unthinkable!, that there may have been facets to his game that were poorly received by some and general stagnation may be the impetus for louder assertions? For example, what if someone decided that they didn't believe Duchene was a long-term ideal fit at center for a Stanley Cup winning team -- what if they decided to evaluate this season on his ability to adapt to the wing position, and decided they also did not like that, making him an ideal candidate to address another weakness of the organization (e.g. another top pairing defenseman)?
Are you going to argue that it's too short of a sample size? It's funny because I hear how the side that may be critical about Duchene is always the irrational one, but there are plentiful of criticisms about Duchene's game that get brushed over; he had too many injuries, he was taken away from his natural position (and can't be a center), etc. Maybe he will become the super star that many envision but it is certainly not a guarantee and to me it is laughable to simply brush it off as some mad paranoia, delusion or overreaction.