Will we ever know why they decide what they decide?
If they don't like something about a school that recruited them, why would they knock that school and then have to face the derision from the fans of the rejected school, if the two teams should meet up later.
And, if the reason is the coach's personality, or the weight of the cash bag, ditto for the above.
Kids being kids though, they may leak it out, but usually their handlers try to thwart a revealing tweet or interview.
Kids have a right to choose for whatever reason.