When Harry Giles was a Freshman in HS it appeared that he could pretty much do it all, he's on the extreme end of the early-bloomer spectrum and possesses prototype height and length. He had a handle/face-up game, he had polished post moves/arsenal of hook shots, solid touch around the basket and from distance, he was grabbing tons of boards and blocking tons of shots, his game was super-duper almost unfathomably advanced -- So one of the things he's equipped with is the ability to deal with double-teams, he'sbeen doubled for most of his basketball career, which is a major plus and part of his underlying value IMO.. Thats sorta how those levels of hype came to pass, looking back Anthony Davis was clearly greater, he was much more of a late-bloomer though..
Marvin Bagley, the likely #1 pick in 2019, is an even better prospect than that whole scouting report too, which is scary. I can confidently say he's the best PF prospect I've ever seen in HS, he's the only one approaching Anthony Davis levels(not on defense, Davis is better and betterequipped) anytime soon (at the PF spot).
Also for perspective Ivan Rabb was once rated the #1 recruit in the class one year prior and people were saying all types of crazy things, back about 4 or so years ago. I kinda keep a watchful eye over these types of "phenoms".