I honestly would not use it because I am more of a private person and dont want to talk to strangers like that. And for those that I trust enough I still have Discord. But I even barely use that with voice chat because I have the problem that too much talking not only distracts me but also gives me a headache. Its the reason why I stopped raiding with my former FC because they even wanted Voice chat for primals that we already knew how to kill. It also turned more and more into something that was necessary to keep up with informations.

So an ingame vc could just mean that more and more groups are vc only thus could prevent some from joining groups because they cant or wont use it.

(Interesting that I kinda have the same fears than Yoshida in that way, the fear that people would demand it for content)