For most the stall is a problem of lift, when it is clearly not. Lift of a stalled wing is much greater that lift for level flight. the real problem is the greatly increased drag and the control problems.
I do fully agree with the first sentence, but at the same time do fully disagree with the second.
The problem of stall is not lift, it is the slope of the lift-over-AoA Curve! The Airplane can fly at any Cl, given the right speed is applied. So a drop in lift can be compensated by more speed, which can be easily demonstrated in Gliders which have two Cl max peaks in the lift-over-AoA Curve. In full stall some of them fly fully stable, but with a higher speed than the lowest possible one. (You can easily demostrate that when flying in formation)
The equilibrum of forces perpendicular to the flight path (or the airflow) is only stable, if there is a positive slope of the lift-over-AoA Curve. Lift automatically equals weight as long as the slope is positive, mother nature controls this for us. Any lack in lift results in increase of (downward) vertical speed, which results in AoA increase which restores lift. If however the slope of the lift-over-AoA Curve is negative, then lack in lift results in increase of (downward) vertical speed, which results in AoA increase which further
reduces lift, hence the airplane switches from the modern rules of aerodynamics to the ancient law of gravity.
Nobody worries about the theory of gravity, neither should we worry about where lift comes from. As long as we know how to loose it, and avoid that situation, we are fine.