Edge
Kris King's Ghost
It's a bigger risk when the average age of your top 9 is like 21, but for some reason, nobody talks about that as a risk.
I agree on the risk of being too young and inexperienced, but I think the concern is also that the Rangers don't really have a great history with players, elite or otherwise, heading into their age 33-34 seasons.
While having a prospect bust can have a significant impact on the roster, it usually doesn't extend to the financial side of things or handcuff a team. The risk with big contracts to older players is that you can have situation where there is a significant impact on the roster AND a significant impact on a team's ability to make other moves.
Now that's not to say we go to the extreme and just dump everyone over a certain age and go with all kids, because that would present its own set of high-risks. But that's probably where at least a few people are coming from, at least on a base level.