Over the last four seasons DD has had 60,47,52,48 points (the half season pro-rated). That's very consistent and just fine. Sure, he had a dry spell as this last season finished. I don't see how that changes anything in my argument. I'm no DD fan but I don't buy the DD derangement syndrome argument either. He's not as bad as you say.
Desharnais scores what is called "soft points". Of course a centre who's good for around 50 points a season looks great on paper. But he's not the guy you're going to rely on to win games, because he gets cold so often. While he goes on some pretty good streaks as a very good, top six producer, he's also gone through streaks where he's objectively hampering the offence. It evens out at the end of the season, but when the game tightens up in the playoffs, his flaws become glaring. It's no secret that when given similar minutes and linemates, Galchenyuk Eller and Plekanec and perform as good or better. In one less playoff game, Eller has 5 more career points in the playoffs playing on the exact same team. Last year, Eller more than doubled DD's point total playing on inferior lines.
I definitely agree that he isn't
as bad as this board says he is. The correct argument isn't that he does not belong in the NHL, it's that he doesn't belong on the first line of a team who's in a position to win a cup now. In the short term, putting him on the first line makes the team actively worse, and in the long term, he's taking away minutes that could be better served both grooming our future key components, and also minutes that can be used to... generate actual offence.
I think that in a perfect world, Desharnais should be traded for picks to a bubble team that wants to generate offence while their young, future stars are developing. I see him on Florida or even Edmonton or Columbus.