I found touch really useful for taking notes (OneNote) and for drawing (Clip Studio Pro) - and that's it. I could try to build some Star Trek-like giant touch UI, but never found it useful to use touch for apps that work better with keyboard/mouse.

So yeah, I agree that I wouldn't want a Windows or macOS device that uses touch for the primary UI, I just want touch-enabled apps that make good use of a pen, on a device that has a proper keyboard/trackpad for everything else.

Arguably, the Wacom Cintiq already solved that issue completely. I did think that the Surface Studio were the most interesting Surface products, though the price wasn't attractive.