What purpose do you think is being defeated? Are you thinking of hypers as extremely directional beasts that are only good for pointing right at the sound source from a distance? They're not shotguns.
Are you thinking hypers are just for cutting down on off-axis room noise? I think they can be pleasing in better situations as well.
Hypers ORTF (for now accepting any mics 17cm apart and angled 110° are ORTF) will create a wider stereo image than card ORTF. Hypers tend to have a pattern that's more uniform across frequency than cards are (i.e. a card is more directional at high frequencies than it is at low). So if you want to create a wide stereo image, but maintain good frequency response for sources straight in front of you, hypers might work better than cards. E.g. to get the same image width you would with ORTF hypers (assuming a fixed setup location of course, and for the sake of argument saying you didn't want to go wider than 17cm due to phase/timing considerations), you'd probably have to run cards at 130 degrees or more. That's starting to put sources directly in front of you far enough off axis to sound colored with some cardioids. Hypers, while attenuated more off axis, at least are more evenly attenuated across all frequencies, and so will color the central sound less.
Not to mention, some folks like the effect you get from the rear lobe picking up a bit of ambience out of phase.