It's the increase of airspeed which gives the aircraft lift in thin air.
And it's Newton's 3rd law of action and reaction I was referring to. NASA explain that it's like a person standing on a skateboard and by pushing a bowling ball outwards with his hands can generate movement.
I don't think you're really following this.
The plane takes off, climbs, and then cruises through average-joe atmosphere at an airspeed of (let's say) 600mph. It enters your hypothesised super-jetstream which has a speed of (let's say) 17000mph; its ground speed is now 17600mph but its airspeed (the one that affects aerodynamics) is still only 600mph, so there is no change to lift or drag.
And NASA is describing a jet, or rocket, engine. The "bowling ball" is the exhaust gas.
A rocket engine burns its self-contained fuel/oxidiser and accelerates the exhaust gas to phenomenal speeds (perhaps more like skateboard guy firing a baseball with a grenade launcher). Airliners do not have rocket engines.
A jet engine gathers atmospheric air and uses a compression/combustion process to accelerate it to lower speeds than a rocket, but in comparatively huge quantities (hence a bowling ball in our comparison) to achieve the same thing. It needs to gather sufficient air, which is why airliner engines have such a huge frontal diameter, but they can still only operate in air which has sufficient density.