while I've seen him claim it's easier to find talent in the top 5 (which most objective person would think) I can't say I ever saw him say they are ONLY taken in the top 5.
If he did, that's a foolish statement.
Here's the thing. I think that a team is more likely to get a better player in the top 5-7, but I also think that with the "1 and dones" it isn't as much of a "sure thing" as it used to be. A lot of the players in the top 5-7 range are being drafted before they even really know how to play college ball, let alone NBA ball.
Just looking at the Lakers with Lonzo Ball, Brandon Ingram and Kyle Kuzma.
Lonzo and Ingram were both 1 and done, top 5 picks while Kuzma stayed in college for 4 years and was even considered a little bit of a reach where the Lakers took him. Since they hit the NBA, Kuzma has been the better, more complete player.
But Ball and Ingram are considered to have more upside and be more likely to have better careers, but they weren't as developed mentally and physically as Kuzma.
So while they may eventually be better players, they aren't right now.