It sure is but i would imagine its a lot tougher in say Soccer.
Baseball scouts have a really tough job too and thats another sport that over relies on stats..
Take RB - Sonny Michel, Nick Chubb and Todd Gurley all played at Georgia together. They were obviously older and younger. All three of them are in the NFL and so far two of them look worth it.
Georgia are known for producing RB but most of them don't succeed in the NFL yet teams keep taking them.
Sure scouting is imperfect but there are football scouts who have made a lot of money and a name for themselves for find those gems. Aaron Donald at one time wasn't even consider better than a 3 star player coming out of high school and in college not many teams gave him a look.
Some scouts saw differently though.
@ilikecheese should know good scouts being a Seahawks fan, as Carroll and his guys are one of the best finding gems. Look at the legion of boom. Not all of them were high prospects or highly sought after.
The fact Carroll finds solid young OL men and turns them into stars is why they keep churning out decent seasons