Not focusing on his present stats....
To start, I don't think Malkin is the problem.
I think DB and Shero are the biggest factors in his lack of growth. It's also possibly he has reach his peak (aka 1.2pts/game) but I don't believe so.
I have read time and time again about Geno flourishing under MT, and growing. With DB he keeps swinging between 2 performance/production levels (0.8pts/game and 1.2pts/game), and hasn't really grown in the past few years. Yes, injuries could be a factor. Yes, no proper PP setup guy could be as well (our 7.5M guy that can't setup a shot).
All the points I read "aka Dupuis more ice time", and "crappy linemates" all point to a coaching problem, and a GM problem.
DB seems to push Shero towards the grinders which does not suit Geno's game at all.
DB doesn't give young talent a chance, favoring older role players/grinders in place.
Shero keeps drafting defensemen instead of forwards (Forsberg comes to mind).
I don't want nor expect to see Geno traded.
I don't expect Geno to ever push against DB.
So I expect this thread will never end
.