There is no answers since you can't turn back time ... the atrocities were committed by entirely different people. The farmers bought that land and had nothing to do with the atrocities, yet they are being forced off the land they purchased and now it will lie in the hands of people with no interest in, or ability to farm it. For the sake of revenge against who? The criminal oppressors have already moved on, either died or are just not there. Now the land will go unfarmed and people will starve. Great plan.
Read up on it. It's not like you can just make someone into a farmer especially with the complex nature of the SA land.
https://www.rt.com/business/435012-south-africa-land-expropriation-starvation/