False. I'd wager I know a heck of a lot more than you. In fact, I know some of these guys and what their actual training/practice plan is, and I'd bet you don't, so I have a basis for my comment. I'm not flinging crap at a wall and seeing what sticks.
Putting in 45 minutes in the weight room 2-3 days a week IS NOT going to help a kid gain muscle. They need to put in CONSISTENT work in the gym (6-12 hours of weight training per week). And no, that does not mean looking at their phone half of the time, doing ten or so sets, and then bouncing out of the gym.
There's a certain amount of calories (after exercise) that you need for weight maintenance, and going roughly 500 calories over maintenance daily should yield a pound of weight gain per week, given that we are talking about a healthy and well functioning kid. For 16-18 year old basketball players, this number should range between 3,000-4,500. A high metabolism isn't an excuse for not making progress. Not gaining weight and muscle? The athletes must look themselves in the mirror. They either need to eat even more, and/or up their weight training regiment. Look at what Mike Hurt is doing and the results he's getting. Don't try arguing calorie intake and weight gain with me either, because what I've just stated is basic science.
Coming into college significantly underweight as a post or forward (in most cases) is a major detriment to a player in his acclimation to the college game. Too many players are coming into college shocked by the basic strength/conditioning program that the team implements, and this knowledge and training should not be brand new to them. If only AAU taught fundamentals and strategy, and HS's implemented effective weight training/diet for their players, kids (posts especially) would come into college with less to adapt to since there is already so much that these freshman must learn.