Not to disagree with you, specifically, this is something I see written by many people and I have no idea what it actually means. Offensive talent (shooting, passing, skating, vision, hands, and so on) are individual skills that players work on themselves.
Organizations aren't ever, like, "Let's make our Top 6 forwards better at doing SICK DEKES." Great offensive players bring those things to the table within the structure of whatever their role happens to be.
No one in the organization (I don't think) looked at Zibanejad and was like, "Mika, what if you became amazing at sniping one timers?" He got good at that on his own, they bumped him into a first liner, put him in the Ovechkin slot on the power play, and the 50 point player they traded for became a 90 point player. He did that on his own, the team noticed and made his role bigger. That's how it works.
Even the idea that the Rangers are uniquely bad offensively, so that could possibly interfere on the individual skill of certain players (like Lafreniere and Kaako), I don't even accept that.
Within the last 4 years, Kreider transformed his game into prime John LeClair having his two best goal scoring seasons in the past two years, Adam Fox went from a prospect with a nice reputation to one of the best offensive defenseman in the league, Panarin went from never scoring 90 points to scoring 90 points 3 out of 4 years (with a short season being the only reason he didn't do it every year). Even older players like Trochek and Vesey both had their best offensive seasons since 2018 this very year!
If prospects aren't developing offensively within the organization, that seems to me, to be on those particular prospects.
Especially Lafreniere, who only showed grinder skills the last two seasons, with a coach like Gallant, whose entire thing was letting players be who they want to be, what they really are.