The issue isn't the offers, it's the timing. Most of those he got as a Soph and his recruiting has been relatively quite for a while. The younger Diggs was a similar case - pursued fairly heavily and then the recruiting just went dark. Now there can be a number of reasons behind that. You hope in Miles's case that he's a late qualifier though or something along those lines and not a kid that plateaued. Could be like tomcat indicated where he put on bad weight and schools backed off, then might be worth a flyer as a reclamation project.
He's at a big time school in NJ with a lot of eyes on it. So I find it hard to believe he was missed. So something else had to cause the schools pursuing him to slow down.
