That’s absolutely false. Many people do experience discomfort when they are new to VR, but with time most people adjust, and are able to play for any amount of time with no negative side effects.
If you try to just power through the sim sickness, you can reprogram your body to get sick when you so much as look at a headset
The VR enthusiast community is laughably tiny compared to the gaming/computing/mobile user world at large, and it's self-selected down to people who were either immune to sim sickness or willing to put in the effort to get past it
The closest I could come to any scientific data is third/fourth hand, so it's not really going to settle any arguments, but here you go: https://www.reddit.com/r/oculus/comments/4woycf/what_are_the...