Your almost there, but there are large gaps in your knowledge. The Earth IS flat, but I see a curve from 39,000'. The reason is because it's flat
and round, like a plate, so you can see the edge from high up. When I fly from Bangkok to London, I don't pitch over as I travel, see. You just get nearer the edge of the plate
For some aerodynamic reason that was explained to me once but which I have now forgotten, the stall in these aircraft starts at the wing tips instead of wing root
Very important the root stalls first. When the first wingtip goes into stall, the aeroplane would roll upside down. So to make the root stall first, you will see wings have a far greater angle of attack at the root, and it washes out towards the tip. When the root stalls first, as what it should, there will be a pitch down effect helping to correct the situation, which is what you want. Stall the tips first, and you lose that part of the lift nearest the rear, and the effect will be to exacerbate the stall.