It is time to take control
Is a pilot in control of his aircraft when he banks more than 35 degrees turning base to final at 400' AGL? What if the aircraft was uncoordinated at the time?
Is a pilot in control of his aircraft if, while on an ILS approach the aircraft is descending at more than 1500 FPM?
What if he can't land within 10' of the centerline, or keep it within 10' of the centerline during takeoff?
What if, during a crosswind landing, he attempts to align the longitudinal axis of the aircraft with the centerline of the runway, with the ailerons?
If, during a training flight, the pilot is unable to climb at 500 fpm at 120 knots for a thousand feet when the aircraft is clearly capable of this maneuver, is he truly in control of his aircraft?
Is he in control if he is unable to enter the flare at the proper airspeed, land within 200' of his aiming point and lower the nose of the aircraft gently to the runway when he attempts to do this?
Is the pilot in control if, during a steep turn exercise, he is unable to maintain altitude within 100' of starting point, airspeed within 10 knots and bank within 5 degrees ?
I believe that any pilot who would argue that the pilot who exceeds the parameters indicated here probably is unable to keep his aircraft within these parameters himself and should get together with a pilot who can show him how to accomplish these consistently and without significant stress.
Last thought - one hallmark of a very good pilot is that he (and of course I mean she as well) can land the aircraft on the centerline at a safe airspeed, in the threshold area of a runway, correcting yaw with proper rudder input and correcting drift & bank with the ailerons during a gusty crosswind landing. Are you that pilot? If not, there is an "app" for that.