Indeed. This is a big problem with the self-styled intelligentsia; they point to others who are not as smart as they are, and cite them as evidence that they cannot possibly be ignorant, because they aren't as ignorant as those they look down on.

Wisdom begins with recognizing that you don't know everything, can't know everything, and generally assuming that you're wrong or uninformed until you can prove otherwise. The immediate presumption that you're right, and arrogance or indignation when it's suggested otherwise is a huge indicator that you're probably suffering the Dunning-Kruger effect.