True, but again, the odds are against it.
I think of recruiting rankings like this, every player can be good, and every player can be a bust. The odds of a highly ranked player being a bust are just lower than a low ranked player. Same as the odds of a low ranked player being good might be low, it still happens.
I'll go back to 2015, because 2016 and 2017 still have some years to change what has happened.
2015 had 4 high school prospects, all of them 200+. Basically all are gone now but Moss, who is an okay player. Not a lot of great ways to rank players, but PER is one that attempts to bring together their total effect on the game - he was 71st in the Big 10 in that stat last year.
2014 had 2 200+ high school prospects - 0fer.
2013 had 1 200+ high school prospect - Jok, who really was underated by that point but still that's a definite plus.
2012 had 3 200+ high school prospect, only Clemmons did anything, and he never averaged more than 5 PPG until his senior year.
2011 had 1 200+ prospect, Olaseni, who was okay.
2010 had 2 200+ prospects, Marble and McCabe. Marble obviously a huge plus, McCabe was okay.
2009 had 3 200+ prospects, only Eric May did anything.
Basically if you look at it this way, there have been 16 200+ ranked high school prospects recruited in the Fan era from 2009 to 2015, that have resulted in two great players, Jok and Marble, and 4 okay players (at best, no offense), and 10 total flame outs. If I had to guess, you have at least 1 more great player in JBo, and I think it's unfair to judge anybody from 2016 and beyond until their careers are over. Plus I think Jok was underrated due to injury. I would asterisk him but that's just my opinion.
Regardless, the hit rate for 200+ prospects is extremely low.