Seems like there is finally a solution with the recent release of version 2004.
With this version, the option "Suggest ways I can finish setting up my device to get the most of of Windows" appears in the control panel, and can be disabled.
If you're using script, this command is confirmed to work:
REG ADD "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\UserProfileEngagement" /v "ScoobeSystemSettingEnabled" /t REG_DWORD /d 0 /f
This of course only works for the current logged in user, if you need to disable for other users, you could use a simple batch script like this:(replace "User" with target username)
for /f "delims= " %%a in ('"wmic useraccount where name='User' get sid"') do (
if not "%%a"=="SID" (
set myvar=%%a
goto :loop_end
)
)
:loop_end
REG ADD "HKEY_USERS%MYVAR%\Software\Microsoft\Windows\CurrentVersion\UserProfileEngagement" /v "ScoobeSystemSettingEnabled" /t REG_DWORD /d 0 /f