Doesn't matter, it contributed to the ANC's downfall. It shifted public perception that the ANC was defending corruption by keeping Zuma there. Just like the ANC were forced to defend their stance in the budget by saying that they also didn't want tax increases, but then they voted for tax increases. All this shifts perceptions, and perception of everything in politics.
As for strategy, we just need to make peace that a lot of people are stupid and/or bigots. No strategy is going to work on them, their mind is already made up. How else would Zuma still get 15% of the vote after everything...