OK got it.
So BJ is starting from scratch. Is that a good idea?
Probably based on his offense. If you study it a little, you will see that it is a precision, disciplined offense that depends critically on timing between the QB and receivers much more so than others that just look similar. So, I do think he wanted coaches who could teach/coach in that way of building the offense. As far as good recruiters can recruit anywhere, I am not sure I disagree with this. It is like saying "a salesman can sell his product". A good Ford salesman can probably be a good Chevy salesman.