Changing the angle of attack effectively changes the shape of the airfoil. No gotcha here either.
EDIT: trying to think what you might mean by "effectively changing the shape". Do you just mean that an upside-down aerofoil is a reflection of the aerofoil the right way up? Because that's the entire point of the argument you seem to be trying to rebut.
A plane flying upside down is most certainly not using the same angle of attack as it does right side up. The real difference in performance is efficiency, the upside down plane is burning more fuel due to the increased drag from sub-optimal operation (a high angle of attack to overcome the optimization for right-side-up flying).
Note that a right-side-up wing can easily plummet by dropping its angle of attack. That is what it's doing while upside down to generate lift.
I am certainly not asserting that, and I'm baffled how you could have formed the impression that I was.
You appeared to be attempting to rebut an argument in favour of the significance of angle of attack. We have another pointless internet misunderstanding on our hands.
"I usually just answer Socratically: "So how can (some) planes fly upside-down?" whenever I encounter the Bernoulli-adherents."
Which is a lazy and garbled gotcha attempt.
Again: this entire pointless misunderstanding has arisen because you didn't see - apparently STILL HAVEN'T SEEN - which side of the debate the comment you replied to is arguing for.
1) anvandare says aeroplanes can fly upside down. This is an argument AGAINST a putative person who argues that lift is entirely a function of aerofoil shape, ignoring angle of attack. In advancing this argument, anvandare implies that he DOES understand and contend that angle of attack is significant.
2) You say something unclear about "effective change of shape", apparently attempting to rebut anvandare, who, remember, contends that angle of attack is significant.
3) I say that what you said about "effective change of shape" is unclear, meaning I am rebutting you, meaning I agree with anvandare that angle of attack is significant.
4) You form the impression that I believe angle of attack is not significant, and tell me that if I believe angle of attack is not significant, then I am wrong.
Can you see where you have gone wrong there?
Having written all this, I'm come to the point of actually becoming quite concerned about your neurological state. If you've had a recent head injury or you're old enough that Alzheimers is a possibility, you need medical advice - you've failed to follow the simple thread of a conversation.