Great news for the dozens of Mac gamers. If Apple's headset is a success(?) and games want to support their headset, adding Mac support will be very easy to justify.
It would also not be surprising if this was another "Tomb Raider" moment, though. Bringing No Man's Sky to Mac required a Metal rewrite, and Hello Games had probably already finished porting to ARM for the Switch version of the game. It's still a hard sell unless you're a studio with nothing to lose like Sean's team or Capcom.