https://www.youtube.com/watch?v=MzNiKnYPO2Q
You can see the positioning of the Visor cam here. If anything, YouTube makes the onboard look worse because of the higher camera. It'll actually be even better for the drivers.
We still haven't seen a visor cam of the Halo. Or talked about seeing flags, start lights and that sort of thing. But you don't need to test concepts thoroughly when it has absolutely nothing to do with the best product or safety, and it's purely political agenda.