I don't care if they take it back after bending it and apple agreeing to replace it.
But it is dishonest and unethical for people to claim "my phone bent" and make claims about "normal usage" or defects near the screw, or mistakes in the forging of the aluminum, or other claims that people have made, rather than just saying "I bent my phone".
I would blame a stuck pixel on you since you seem to complain about a lot of things in general. For other people, it is more logical that a stuck pixel is a variance in the quality of the screen. But a stuck pixel is not even close to some of the ridiculous claims of "my phone bent" when it is clear from how much it has magically bent, that it was user error.
Again if Apple takes it back, then why do you care? It is not for you to judge if it is ethical or not because you don't know how it was bent.