This 100%.
Anyone that's a 3* and up with ANY kind of NFL potential (size, speed etc) is gonna jump at the chance to be coached by BB.
Even if the kids don't, their parents/H.S. coaches will. He will need a team to help with recruiting, NIL etc....but his X's and O's are on a whole different level.
However.........I think Belichick would be better at a school like Stanford, working with Andrew Luck.
BB loves smart players. Parcells/BB used to talk about how LT wouldn't pay attention in meetings but if they threw some random questions at him when he was napping, he'd go up to the board and tell you what every player on offense AND defense was supposed to be doing on that play...and then would fall back asleep. He won't get to spend as much time with the players like in the NFL, so he needs guys that can learn quickly and apply it to the field.