Please consider voting up (or down) this new feature request:
https://www.jamf.com/jamf-nation/feature-requests/8236/skip-all-macos-setup-assistant-screens-for-truly-zero-touch-deployments

And yes, I know, Jamf has to work with Apple to make this happen but that's the whole point. They (Apple and Jamf) are so very close to providing a truly zero touch deployment platform. It seems, they just need this one small step to make that happen!