Apple said that contact lenses might interfere with eye tracking (or maybe with the iris scanning). So it’s a data point if he says he had no problems with soft contacts.
Only some kinds do (mostly cosmetics). If you go through the purchase process there's a questionnaire on if you actually need the inserts.
Also, I don't think people with only near/far vision issues or prism correction know how this interacts with VR. IIRC in general you always use your far prescription and there is no support for prism.
