Information
The prompt for Privacy Setup services during Setup Assistant _MUST_ be disabled.
Organizations _MUST_ apply organization-wide configuration settings. The macOS Privacy Setup services prompt guides new users through enabling their own specific privacy settings; this is not essential and, therefore, _MUST_ be disabled to prevent against the risk of individuals electing privacy settings with the potential to override organization-wide settings.
Solution
This is implemented by a Configuration Profile.
mobileconfig profile info:
com.apple.SetupAssistant.managed:
SkipPrivacySetup:
True