It's always a bit weird to me how fans will focus on the GM when it comes to drafting, as if he's the singular person that goes out to scout these 17 year old kids and it's his input alone that decides who gets drafted.
The fact is, for the most part the GM simply doesn't have the time to run around all over the globe to personally eyeball this prospect or that prospect, that's why he has a head scout who supervises a flotilla of scouts that do the actual legwork.
I mean yes, ultimately it's the GM who has final say in things as it's his butt going to the podium on the stage to announce who they're "so proud" to select, but that final say is, for the most part, based on the input he's received from a bunch of other guys who actually do the scouting. This is especially true for any players selected past the 1st round.