The technique described—applying slight back pressure on the yoke during the takeoff roll to lighten the nosewheel—is a real and widely taught method, but its application and purpose vary significantly depending on aircraft type, runway surface, and conditions. In many light single-engine trainers like the Cessna 152/172 or Piper Warrior, POH-recommended technique for soft-field or rough-field takeoffs explicitly calls for holding the yoke aft to keep weight off the nosewheel and reduce drag or damage risk from a rough surface. Even on paved runways, a small amount of back pressure is sometimes taught to reduce nosewheel scrubbing, minimize vibration transmitted through the airframe, and improve directional control feel as speed builds. However, this is different from what appears to be happening in the video the poster describes: the aircraft breaking ground at 42 knots suggests the instructor may have induced an early rotation rather than simply unloading the nosewheel, which is a distinct and more consequential deviation from standard operating technique.
For working pilots, the distinction matters because premature liftoff below a validated rotation speed introduces real risk. Vr is calculated with margins above stall speed and control authority thresholds specific to the aircraft's weight, flap setting, and density altitude—numbers that exist precisely so pilots don't have to guess when the airplane is ready to fly safely. Lifting off early, especially in gusty or crosswind conditions, can result in the aircraft settling back onto the runway, a wingtip or tail strike, or reduced controllability if an engine or wind gust upsets the aircraft in ground effect at marginal airspeed. This is a known accident/incident category in light GA: early rotation combined with high density altitude or a soft/short runway has factored into loss-of-control and runway excursion events documented in NTSB reports. The nosewheel-lightening technique is legitimate for its intended purpose—smoothing the ride and reducing scrubbing drag on rough or soft strips—but it should never be conflated with, or bleed into, an actual early rotation. A CFI who is inadvertently teaching a student to associate "light back pressure" with "the airplane leaves the ground early" is creating a habit pattern that could be dangerous if transferred to a different aircraft, runway condition, or weight/balance scenario without proper reference to that type's actual Vr.
This kind of instructional nuance matters broadly across aviation training culture, from Part 61/141 primary flight schools up through Part 135 and business jet operations, because habits formed in the earliest hours of flight training tend to persist. Airline and business jet SOPs are built around strict adherence to computed V-speeds (V1, Vr, V2) precisely because ad hoc "feel"-based rotation technique doesn't scale safely to swept-wing jets, heavier gross weights, or performance-limited runways. A transport-category pilot who never internalizes strict Vr discipline in primary training may carry looser habits into environments where the margins are far less forgiving—contaminated runways, engine-out scenarios, or obstacle-limited departures. CFIs bear particular responsibility here: demonstrating a technique in a way that looks like premature rotation, even if the underlying intent was nosewheel unloading, can send the wrong message to a student who lacks the experience to distinguish "unloading the nosewheel" from "flying the airplane off before it's ready." The poster's instinct—that the demonstrated liftoff speed felt unsafe—is a good example of a student correctly sensing that something didn't match standard procedure, and it's a reasonable prompt to ask for clarification, cross-check the POH's soft-field and normal takeoff procedures, and potentially seek a second CFI's perspective or a chief instructor's input before adopting this habit as normal technique.