People’s genders don’t represent their ability to contribute to a discussion about developing for VR applications - gender, and the representation thereof, is largely irrelevant. Since it’s irrelevant, it isn’t better representation any more than looking specifically for someone who has brown hair because your existing panellists are blonde.
The hypothetical better male candidate is in the exact same place as the hypothetical existing female candidate, but by preferentially or exclusively seeking only the latter you automatically exclude the former, which is the basis for discriminatory behaviour.