This makes me wonder whether inside Apple's R&D labs, do they have macOS installed on iPads to see how that works out? Maybe just to see how macOS runs on their A-series chips. I would guess they have at least tried it
I would be shocked if they didn't. They probably have iPads running MacOS, prototype MacBooks/iMacs with their own processors in them, iPads running some kind of hybrid 'PadOS' that's a cross between iOS and MacOS, etc. I'm sure Apple's well aware of how gimped iPads are, because of the current state of the OS it runs, and that so many of us want to go iPad only but can't.