Microburst...
Yes, that A for NA text is fantastic! I would love to study it cover to cover but I sadly don't have the time right now.
Of course, if we talk about negative AoA, it decreases when the wing's positive AoA increases, but the effect is always in the same sense as the wing. Less negative lift has the same effect as more positive lift, right?
I think this would actually be "negative lift" and not "negative AoA" to be correct? I could have a positively cambered horizontal stabilizer at a negative AoA that still produces positive lift. In that case, increasing the AoA on the wings would also increase the AoA on the horizontal stabilizer.