Fighting hate with hate & painting with broad strokes signal defective reasoning.
This isn't proof that all South Africans are xenophobes.
I have South African friends who hate the xenophobic minority in their country just as much as anyone else. The loudest & most hateful people are usually the ones who get the most attention online and in the media.
Most South Africans are not xenophobes, just like most Nigerians are not scammers. It's wrong to judge an entire country by the actions of a few people.
That said, not every complaint about foreigners is made up. Sometimes foreigners do bad things and people get angry because of it. If I remember correctly, the woman in the video was upset because some foreigners (Nigerians, I believe) were selling drugs to children in her community. If that's true, then people have every right to be angry about that, but being angry at criminals shouldn't be the same thing as hating an entire nationality. The people who commit crimes should be blamed, not millions of innocent people who did nothing wrong.
We should condemn xenophobia wherever it appears. At the same time, we should also be honest enough to call out the bad behaviour of our own people when it happens.
We can't demand fairness from others while refusing to hold our own accountable.
In the end, everyone should be judged by their actions, not by their nationality. That's the fair & sensible approach.
"Not all South Africans are xenophobic"
Such nasty people. Irritatingly nasty people.