I'm trying to get my mind wrapped around this concept. While there's some insensititivity and shallowness in the job-description of being ignorant, for the most part, ignorance is just not knowing, being honestly convinced of factoids rather than facts, a sad lack of awareness. All have said that, I know.
In puzzling this idea, I'm thinking to "choose ignorance" is to know something as a fact or truth and then pretend to believe otherwise for some reason.
I think you're all right. Such a person would be the worst bigot, traitor, wolf in sheep's clothing ever.