Perhaps because, with a few minor terminological exceptions (blowback vs flapback, transverse flow vs inflow roll etc) and one major explanation issue (precession vs aerodynamic forces) all the teaching on both sides of the Atlantic is the same and I used the US Army notes (particularly because they included a 205) when I was trying to discuss RBS with Fidor who I believe is from your side of the pond.
An FI - if a blade stalls at say 12 degrees AoA and then descends it will experience an increase in AoA so that the peak AoA the blade sees is not when it stalls. That clear enough?
CFS, ETPS, US Army, Wagtendonk, Prouty, Coyle - they all have something to say and I am always listening (but not to you AnFI).