Oh ok, I didn’t see you mention macOS as an option before so I thought it was off the table for you.Quite the contrary. I use macOS 90% of the time on machines that run it, and have done so for more than 15 years.
I have to resort to the Surface Pro or Go 3 to remain productive on the road, when I don't want to take a MacBook Pro with me. Tasks such as writing, editing reports in Word, or working on Excel or Power Point files is a struggle on an iPad. Nor can I run software such as Android Studio, or VS Code etc. So, for me, the iPad Pro has not become the productive powerhouse I hoped it could be, even with another methods of multi tasking now.
I use the Surfaces, because they are robust, can be a tablet still when I want, and run a full-fat OS on them - even if that OS is not my preference. Time is money. And it's about getting a job done efficiently on the road. Some would argue just use and MB Air, but the MBA is not as robust as the Surface; the former doesn't take much to leave keyboard marks on the screen when closed and under a little pressure. On the other hand the the Surface screen is designed to have things pressing on its face. The Surface is also more convenient to flip open and hold when on site, with a keyboard that folds behind the screen. With the Air I'm holding a laptop while walking around, which isn't great.
It's not a religion, and I don't have to be bound to one OS, I just use what works most efficiently for my own situation.
The original premise of the discussion was the assertion that because there's an implementation of multitasking working offered now, that is not to everyone's liking, that there is no way macOS could ever work on an iPad. I disagree. macOS could offer a bunch of us the extra flexibility we need to run full-fat software on the go, in a convenient format, even if no effort was mad to optimise it for touch. But its a mute point anyway, as it seems very unlikely from the soundings at the WWDCs. Catalyst, SwiftUI, and Desktop Class APIs are where the convergence is heading. Not the other way. Even though the hardware would now accommodate it.
I’m in a relatable situation to you in that we both need portable desktop OSes. For you, needing to hold and use your device while walking around the field. For me, needing to be able to use a pen with my work software on the go. I too had to get a Surface (Laptop Studio) for this. But I much much prefer macOS. And while I desperately wish (and have wished for many many years) that Apple would make a macOS device for us (I only want pen input though, I would actually disable touch if I could), Apple doesn’t seem too interested. It might be too niche, at least so far.
Yeah the shortcomings of Stage Manager aren’t very relevant if one only wants to run macOS on iPad only with a keyboard and trackpad (since SM was designed for touch).
It does seem Apple is uninterested either way.