I thought it was badly argued in that he didn't cover the base of Sprong, or what the trade looks like in two years time (which is still Cup window), at all. Also made some rather large assumptions about how much Maatta's medical past is affecting his skating right now.
But more to the point... yeah, if Sprong + Maatta + 1st is the deal, then I don't think I want to do it. Going over the points he makes, I disagree with enough of them that I'm against the deal.
I'm not entirely confident Duchene is the 3C we need (or that he's actually being lined up to play there), I think replacing Maatta without it being a downgrade is hard, I think Sprong is a decent bet to be a late campaign reinforcement this year and I think you could end up missing that 1st come TDL too. I think Duchene could be great here and I really like having him as Sid/Geno insurance but I'd be leaning against the deal just for this year alone.
The bit where two years down the line you don't have Sprong's cheap goal scoring and Maatta's replacement might need paying, while you try to re-up Duchene and given Guentzel his money all at once... yeah.
I'm not hardset against it, but I don't think he fulfils enough of a need or puts us enough over the top to be worth two assets who are contributing now and could be contributing really big in the future.