Yeah but, certs are not necessary for the oculus rift to function.
An enterprising user can turn off these driver signing enforcement settings but it's quite a song and dance and first you have to even be aware of it.
Besides, this is a false dichotomy - On your own comp you can self-sign the driver cert! The CA just has to be in a driver trust store.
The only people who lose out are those trying to distribute drivers to computers they have no control over and who cannot convince the user to install a certificate.