Let's engage in a scenario together. Imagine you and me are both Execs at Apple. You're in charge of iPadOS and I'm in charge of MacOS. You take the position you have here with me and others in the company, and are pressing us to basically turn the iPad into a Mac... at minimum, to at least mimic a lot of what runs on the Mac on the iPad.
As the Engineers have explained to you that there are significant limits placed on the iPadOS operating system itself and on the applications that run on iPadOS because of: thermal envelope and power constraints given that it's meant to be used in a mobile fashion on battery power and is designed with that purpose in mind; given that its screen size ranges from
very small to just entry level; and given that it's a tablet first, touch first device... you discount these things and continue to press forward with your vision. We also explain to you that there is not market support for tablets like iPads to run full blown Mac software and macOS because of the all of the compromises.
Myself and others on our team and others at Apple have a meeting and decide to give you latitude. You go ahead and make the decision to turn the iPad into a more Mac-like experience. To basically take the governor switch off so it can run apps like they are on the Mac, and even dual boot macOS and get iPadOS basically running and functioning more like macOS.
If it doesn't go well... if you don't get market support... you'll be fired.
The reality is that your logic is circular, and you continue to ignore facts/physics/reality. Nobody is going to develop software applications in XCode (Apple's development framework) on iPads: it's impractical. For instance, no, it won't make sense on an iPad Mini, and doesn't make much sense on any iPad for that matter because iPads themselves lack the precise input mode of Macs and XCode is a full development environment including front-end and a simulator. Nobody is going to make a living architecting buildings or designing bridges on iPads either, it's absurd.
I can see you are running off to Google to try and help with the circular logic you are engaging in. The article you linked to is simply talking about how an Architect uses the Concepts App on the iPad to sketch out architecture ideas instead of using pen and paper: not for detailed architectural work. The detailed architectural work is done on a high-end $3000+ CAD program like ArchiCAD on a Mac: not on the iPad Pro.
I've stated that the iPad has its commercial applications, but the further on the spectrum one goes to professional applications, the more it gets into Mac territory for all of the reasons mentioned.
Here's a good example of professionals who try and edit video on the iPad Pro using Final Cut Pro on the iPad and all of the struggles they went through: