At some level, education is about instilling certain ideas and theories within an audience for the purpose of driving some kind of social activity. Whether that activity is academic research or religious proselytization depends on the information being conveyed. But every form of education does require a certain set of axioms be taken at face value.
People tend to lose sight of the fundamental and necessary techniques used in imparting new knowledge while fixating on the relative values that the new knowledge provides when they toss out words like “indoctrination”.