the recruiting star system is perfect. It's a 100% indication of how good players will be, and coaching does not matter - it's all about rankings. I'd rather have 9 stars combined than a really good coordinator. Live and die by that, my friend.
What did coaches do 20 years ago before the internet and before there were stars to tell them who to recruit? I guess Joe Pa, Tom Osborne, Bobby Bowden had to use their own brain and recruit kids that fit their system and not worry about a star rating as they were confident they could coach the kid and develop him. Good thing Osborne didn't waste his time with walk-ons(he only had 27 go on the make the NFL, guys that would have probably not even been rated by the star system).