south africa didn't get everything it wanted and the ruling was mostly a nothing burger since it was just a warning to israel that it is bound by the genocide convention, however you cannot say the ruling was in favor of israel as israel lost on almost all fronts. israel wanted this case to be thrown out on jurisdictional reasons which didn't happen, they claimed that no sensible actor could perceive actions of israel as genocidal which was refuted by court, and most important of all they used statements made by israeli officials as indication of genocidal intent, which israel claimed was solely aimed at hamas (it was not everyone with at least 3 brain cells could've recognized that). even if court ordered more immediate measures israel and its allies wouldn't follow them, so nothing really lost there.

all and all it was a medium sized propaganda win for the anti-zionist side since it questioned the absolute support western countries have thrown behind israel. human right watches and NGOs saying you may be doing genocide is one thing, an internationally recognized arbitration court saying it is a different thing. i doubt nothing will come out of it but still nice to have.