There was an implicit "and not in an interview as part of the GDC hypefest" in there. I grew up reading Mondo 2000. I still have a Power Glove kludged to talk to a serial port and an HMD made out of a portable TV, Fresnel lens and swim goggles I made back in middle school. I would love for VR to be something other than a novelty. Gabe Newell saying the fixed one of the bigger persistent problems with a box of LEDs and a couple of lasers does not smell plausible to me.
My mom can get motion sickness in a regular old movie theater. Me, on the other hand, I love that stomach dropping feeling you get when you have a flying scene in a dome IMAX. I think some people are really sensitive to it, and others, not so much.