I've read the whole post, and my answer doesn't change (and doesn't self-apply

).
The "I don't give a damn blabla" is the usual theorycraft people always says when they judge such a subject. But reality is : people DOES react to words, and ARE wounded by words.
Perhaps some happy few are able to completely detach themselves from what's being told to them, and stay calm ever under the most horrible insults/provocations, but it's then any combination of one or all of these reasons :
- They are among the handful of people, who are blessed with this particular strenght of self-control far above the average, and can effectively control themselve all the time.
- They are in full delusion, and THINK they can hold themselves, but reality is different.
- They were simply not insulted in the "good" way.
The only people completely above whatever is said to them whatever the case, are clinical cases who simply have a severed emotional link to reality.
Most people simply have different degree of self-control and emotional intensity, and above all different personnal histories resulting in different "soft spots".
If you know the soft spot of someone, you can wound him by words alone, and any amount of theorycraft about how you can be above this, is, well, theorycraft.