Long gone are the days when an instructor would have a student take the opposing position and argue it, forcing research that might de-propagandize the student.
I think the concept is of “critical thinking” which is to confront the ideologue.
Unfortunately when ideologues are in a position of power they attempt to use that power to simply shut up the free thinker, and shut down the discussion. At that point we enter dark times, “force on man” as Ayn Rand would say.