Hello, I'm having a problem with this screen appearing on my computers. I want it, and anything related to halting startup disabled.

What I've tried so far is setting the registry key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\UserProfileEngagement\ScoobeSystemSettingEnabled to 0, as that was the advice I got online. Didn't work.
I've also tried unchecking the "Show me the Windows welcome experience after updates and occassionally when I sign in to highlight what's new and suggested" option in Settings->System->Notifications as that was supposed to help too. Didn't work.
What do I need to do to get Microsoft to stop bothering me? Preferably something with a CLI so I can automate it.