I don't know just how factual this is but my understanding is there was and largely remains a massive divide between the Afrikaaners and those of British ancestry with the former holding a strong separate identity. This is why it was largely the Britonic populations that held loyalty to the crown during the shift to the republic. So certainly I would say it is plausible but whether or not such would be welcomed by the establishment I do not have the knowledge to say one way or another.