It seems that F-16B can be operated by a single pilot unless the mission profile specifically needs two pilots. We do not have concrete proof that on 27th the above 606 had one or two pilots, and who the 2nd guy is.
PAF has a pilot to Aircraft ratio of 2:1.
i.e. they have 2 pilots for a single aircraft.
Also a twin seater is designed specifically for operational reason that require 2 pilots. Even a commercial aircraft can be flown using just one pilot. But no airline in the world will every send up a flight with no co-pilot.
Only a fool will agree that during stressful combat operations, a twin seater will have only one pilot.