Comment by varenc

From the video, you can turn the headset into an external display for your Mac[0]. This is critical since I'm doubtful I'd be able to get much work down in visionOS alone.

The use case I imagine is that you still use your laptop keyboard and trackpad like normal, but now you just have a mirrored display floating above it in whatever the ideal size/position is for you. For this to work of course you have to still be able to see your laptop. But if the marketing is to be believed it'll do that quite well.

([0]: Apple already supports turning an iPad into an external Mac display and amazingly it works quite well. It sets up a direct device-to-device wireless link (awdl/llw) and there's no noticeably latency. I assume the headset will take a similar approach)