The spinoff happened last year, only because MK is backing another candidate for President and even the courts have held that ANCs opposition to MKs candidacy is “too late” as fundamentally they allowed the claim of association, name and logo of the party so long, they can today not disown them. Significant numbers (a little less than half) of ANC voters as well as various politicians have switched to MK showing you there has historically not been much difference.
This is basically the same as when Democrat politician were to start a presidential run under a separate communist party and then still claim they were a Democrat. Because today various top Democrats (AOC, Bernie Sanders) are also members of the Communist party and said party has for over 100 years been intertwined they could do that and Democrats could not stop them from running claiming to be a Democrat under the Communist party.
Note also that the separations only happened when certain media outlets started to pay attention and it became broadly known by many video that MK was directly calling for outright genocide - they said the quiet part out loud. Now that some media caught on, they think that’s “too extreme” (wink, wink, nod, nod) when this has been an issue for the past 30 years.
As far as the law, it says the government can take land if it finds this to be equitable; that has a meaning. You build a country on DEI, you get Apartheid 2.0.