Originally Posted by
Dee Vee
Still looks like an optional feature that Boeing think they can get away with charging an arm and a leg for, instead of being an included standard basic piece of safety equipment.
I think you're misinterpreting the post that you quoted from.
But airlines will still need to purchase the other feature, the angle of attack indicator.
That doesn't mean that you have to buy the AoA indicator in order to get the AoA Disagree warning functionality. It means that you get the latter for free whether or not you buy the former.
Personally I think charging for either is indefensible.