Fun fact: Did you know that some police forces use "gainsayers" (I don't know if that is the exact term they would use... but you get the drill). They are specifically added to criminal investigations to avoid tunnel vision by the investigative team. When it was introduced in the Netherlands, "gainsayers" were nervous that everyone would start hating them and they would become the outsiders soon. None of that happened. They have a special purpose and it is embraced. Ironically, "devil's advicates" that don't have an official job description as gainsayer will have a very hard time in those organisations.
Strange isn't it? The people who may be naturals at it are not allowed to practice it.
Why is it that people in power can't deal with criticism?
Because the people who put them there can't either.
We're doomed!