So..I presume the first computer wasn't a computer in your definition of computer? It was programmed via physical punch cards, no IDE in sight.Apple Vision Pro is great for doing power points and excel spreadsheets and watching TV and Movies. Right now Apple Vision Pro is an expensive appliance and not a computer. There is currently no native way to build applications and web apps within the system. A computer on the other hand can build apps and websites natively from the device itself. To me a computer can be used to build programs for itself and other devices.
I feel on some level that Apple was wish casting onto the Apple Vision Pro with terms like "Spacial Computing". The truth is the Apple Vision Pro is not capable of being a computer yet. Apple Vision Pro isn't self sufficient enough to be a computer.
Just because an appliance was built using a computer doesn't make it a computer.
I'd be shocked if we don't see Xcode come to AVP in the next 2 years. Everything is nearly setup for it - iPad has had playgrounds for years now, SPM is actually usable, and visionOS solves a lot of the issues that iPad faces (Not having enough screen real estate, and window management is a bit of a pain, also - base spec is now 16GB/M2.)
Plus making a $3500 headset become your flagship development environment will be great for Apple's bottom line, espeicially given people will still be buying MBP's as toting around a headset isn't quite commonplace yet.