That you use to look at family photos, use iPhone apps in a giant window, watch movies, and play with VR Mickey Mouse? The presentation seemed to lean more towards the consumer than industry applications.
Mac Pro >= Pro Display XDR >= ProRes >= Logic Pro > FinalCut Pro > Vision Pro >= MacBook Pro >= iPad Pro > iPhone Pro >>> AirPods Pro
The goal is excitement and investment in the app ecosystem so, when they figure out the form factor, the cheaper/lighter/more useful future device is a bigger hit.
Many professionals would be thrilled to have a portable multimonitor setup that they can use from the couch, bed, airplane, train, Uber...
I understand the skepticism, but sometimes our perception of the world is quite narrow. Given that most of us are developers, even more so.
I don't mean to be condescending, I just feel that way a lot with both myself and my colleagues when exposed to fields and constraints that we haven't seen before.