The extensions also aren't triangulated and are non-nodal. They would apply a massive bending load into the hoop if it were to ever be used.

Strangely, that picture kind of looks like the S roll bar with those extensions simply added on top. While it's obviously pre-production, I do find it odd that with that seat location driver's helmet would still be marginal at best. Kind of shoots a few holes into the "it fit in CAD" argument.