What some instructors found to be 'fun' flying would not necessarily be what they would recommend to their PPL students.
Such as, competitions between fast jet pilots as to who could carve the prettiest patterns in the desert sand with their wingtips at 300kts without actually causing enough damage to the aircraft that their bosses would get upset.
(No, I've never done any flying like that. Yes, I have had instructors describe it to me.)