Did you open a new account to make this post to cause me to feel uncomfortable and that my solution was unwelcome? If so, you're out of line.
I'm not an Apple employee, I'm a long-time Apple user with a lot of experience in this App Store forum who volunteer's my time to assist other users with issues they can't solve on their own.
I offered a work around to what a new Mac user should do with the pre-installed, non-macOS apps on a new Mac, in case, as occasionally happens, that 1st step didn't work.
With a new Mac with macOS Catalina, after setting up the user account, a new user needs to adopt the pre-installed, non-macOS apps into their Apple ID;
- Open the App Store app on the Mac.
- Click the sign-in button or the user photo at the bottom of the sidebar.
- For any unadopted apps, the App Store should now show an Accept button, followed by a list of those apps. Click the Accept button. Sign in again with the user's Apple ID if requested.
- Those apps should now update properly.
However, if for some reason those apps are not found in the App Store app to be accepted, the above work around works fine, it just uses a bit more bandwidth.