If you mean by raising awareness he's got the right-wing press and their followers frothing, then yes, it is a success. But will it affect actual change? No. By calling for another inquiry knowing full well one's already happened, all Musk has done is put Labour in the crosshairs. They now look like shitboxes for saying no to another inquiry. It's political trolling, pure and simple. It's certainly not a win for the victims by any stretch.
Plus, we don't need a bloody new inquiry! We need greater police action within those communities, a functioning courts system that actually processes and convicts rapists, more prisons and tougher sentences. Not more pen pushing. Think of how many more girls could be abused in the time it takes to set up, run and conclude another inquiry.