Giroux's rebound is both health and playing LW with Couts, if he was still at center, he would have had a good but not great season, he's not as quick or fast as he was five or six years ago. He was a dominant player from age 23-26, the falloff began in 2014-15, before he was injured, and injuries tend to become more common as players age. This follows the normal decline curve for hockey players.
Playing LW takes a lot of pressure off him defensively, reduces the amount of skating Giroux has to do, and playing with Couts has helped him the same way it's helped practically every Flyer forward the past three years. But the odds are that this will be his best season going forward.
Giroux will be a solid veteran presence going forward, but Couts, Patrick and Provorov will be the key to winning a Cup.
As far as Patrick, since the All Star break he's scored at a 53 point pace, added by promotion to PP1.
Next year I expect a huge jump from him, he's acclimated to the NHL and will finally be able to train in the offseason.
And Lindblom should be more effective on his LW.
So to me, 40-50 ES points and 70-80 total points is not out of the question.
And given his size, strength, and defensive instincts, he could approach Couts in value.
Couturier only had an offensive breakout season due to having an elite player like Giroux on his wing. Couturier doesn't have the innate offensive instincts at the NHL level to play to a 70+ point season. Odds are he will never replicate this season without Giroux on his wing.
See, I can make claims that cant be proven, too. The difference is, I dont try to pass my BS off as fact.