It is not because you convinced them that they may be wrong
Cognitive dissonance is quelled by stubborn defense and clinging to beliefs.
As St. Paul told the Ephesian congregation: we need always to "speak the truth in love". The goal was replace their mistaken worldview with one that was true and evidence based.
Something of Value by Robert Ruark—Mau Mau uprising Kenya—-confirms your point.
Cognitive dissonance is quelled by stubborn defense and clinging to beliefs.
As St. Paul told the Ephesian congregation: we need always to "speak the truth in love". The goal was replace their mistaken worldview with one that was true and evidence based.
Something of Value by Robert Ruark—Mau Mau uprising Kenya—-confirms your point.