Imo, Rosen really does not care unless he gets his ego in the way.
He is a partner at Weil and his first objective to bring in revenue whether it be from delaying, prolonging, etc., the case, he will do it.
He satisfies his client by doing what they ask, gets his billable time (quota plus bonus) in, and brings in revenue for Weil (which he shares in the profits at the end of the year). All the attorneys are in on it from the Creditors committee, EC, Debtor's counsel, etc.
Example: Rosen says we are in good faith talks with EC. That means more $$ for Weil. So on and so on...
Attorneys like to pad the bill.
All IMO of course.