Contrary to C, it is easy to prove that you have an ear or mental condition that makes you sensitive to noise; a note from a doctor or something suffices.
Contrary to D, in case such a condition exists, “toughening up and growing a thicker skin” is not actually a possible response. In some cases, it appears that loud noises make the condition worse. Even when this is not the case, random exposure to noises at the whim of the environment doesn’t help.
I realize that you are appealing to a metaphor, but I think that these points often apply to the unmetaphored things as well.
To Bob, I would point out that:
Contrary to C, it is easy to prove that you have an ear or mental condition that makes you sensitive to noise; a note from a doctor or something suffices.
Contrary to D, in case such a condition exists, “toughening up and growing a thicker skin” is not actually a possible response. In some cases, it appears that loud noises make the condition worse. Even when this is not the case, random exposure to noises at the whim of the environment doesn’t help.
I realize that you are appealing to a metaphor, but I think that these points often apply to the unmetaphored things as well.