I would say "great"... but also, "Why bother?" You did compare iPad Pro and iOS to alternatives, no? Main computer and all that?

The point is "main computer" means main... not secondary or ancillary to my main computer. Your average person does not have a need for several thousands of dollars worth of screens, and would be much better off with a laptop vs. iPad pro. Furthermore, the premise of this "experiment" is extreme navel gazing.

"Hey look at me everybody! I bought a device for almost a thousand dollars then spent a lot more on apps, then wasted a shit pile of time for a gimped UX that sort-of works! You can do it too! Just get your check book out and be prepared to buy another laptop and/or VPS space because you'll need it!"