The article doesn't cite a source and the number is meaningless without knowing the methodology. If you put a headset on somebody new to VR and spin them around the yaw or roll axis, almost everybody will get sick. But that's a situation you encounter in no modern VR game, which all have snap-turn (except for flight and racing sims). Furthermore, most people simply get used to it, even if they initially have issues with it. For some it takes longer than others, but the end result is that it is a non-issue. Fans, ginger and a bunch of other things can help as well.

Ever seen a beginner try dual stick controls in a FPS game? That doesn't exactly come naturally either, that doesn't mean we should stop making FPS games. My worst case of motion sickness so far was Half Life 2 on a monitor before they patched the FOV.