Fortitude- the virtue that challenges us to be courageous

Why is it that fortitude is so often overlooked or condemned to be politically incorrect?
When did it become rude to speak an intelligent, informed opinion? It seems to me that nowadays if you have a different thought or an idea that opposes another persons' idea it is considered wrong, adversarial or wrong.
I believe that if you arent' truthful (not to say you can't be tactful while truthful) then you are disingenuous. I would prefer to be around those who had the fortitude to disagree with me and make their opinions known than those who cower and choose to just agree rather than think about a situation and have a voice of their own.
The latter situation recalls the tale of the Emperor's New Clothes.