Boeing states that forward pressure control column is a not a standard procedure,(ie not for every t/o),just in case of crosswind and a if the runway is wet or slippery conditions.
From the B737NG FCTM Rev 8, page 3.6:
Light forward pressure is held on the control column. Keep the airplane on the centerline with rudder pedal steering and rudder. The rudder becomes effective between 40 and 60 Knots.
And page 3.8:
Above 80 Knots, relax the forward control column pressure to the neutral position.
No mention of X-wind or slippery conditions. Had you followed this Boeing guidance you might have spotted something was wrong around 80 Kts. (Unless the instructor jams the elevator between 80Kts and rotate, in which case he/she needs to get a life.)
Where did you get the information that holding forward pressure on the control column during the initial phase of the T/O run is NOT a Boeing recommendation? You are quoting the FCTM in you last post, so you must have access to it.