VR sickness is not a permanent thing. You can train it away. You can also just do stuff that doesn’t cause it in the first place. But I recommend training it away, cuz some of the best VR content is the stuff that would cause VR sickness to people that still get it.
The mandarin X is pronounced similar to SH pronunciation in English.
Like Xiaomi is pronounced “Show me”
So Xitter and Xit are not pronounced with the Z sound you are thinking.