Note that the EFF is a minority party that is nowhere close to getting the government. Mandela’s party, the African National Congress, is nowhere the same at all. Don’t let idiots conflate the two.
Some important distinctions that must be made:
Resisting active colonization is a fair goal, but these people aren’t calling for the expulsion of people who consciously made the decision to invade their country, but for the ethnic cleansing of the descendants of those colonizers too, which doesn’t make it any less of a call for genocide.
Reclaiming reparations and economic justice is fair. You can do it by investigating crimes committed during apartheid and finding out which wealth comes from taking advantage of an unfair economic framework based on exploitation and racism. If you go through the route of claiming “all white people in South Africa are colonizers and therefore may be stripped of property”, the logical conclusion is that a poor white dumbfuck who was born after Mandela’s rise to power, didn’t get an inheritance of some sort, but worked hard and bought a small plot of land should receive the same treatment as Elon Musk’s father, which is an insane take and not based on a desire of economic justice, but on identitarian, racist lines.