in a fantasy world

in which it was clearly established that these supremely powerful, undetectable weapons being shipped out to trained mercenaries in strategic locations would result in the toppling of regimes which was referred to as the antagonists area of expertise and demonstrated by the same antagonists successful takeover of Wakanda

In the movie universe the plan would work in liberating black people but at the same time burdening them with the costs/horrors of global war. This was all stated in the movie.