Android Emulator appears in strange UI

I am trying to create and run an AVD from command line using Android's Command line tools.

This means I used the sdkmanager to download the following modules:

• platform-tools
• emulator
• build-tools;29.0.2
• platforms;android-29
• system-images;android-29;default;x86_64

Afterwards I created an AVD using call avdmanager create avd --name android29 --package "system-images;android-29;default;x86_64" where I selected no for Do you wish to create a custom hardware profile? [no].

When launching the AVD using emulator @android29 and booting it up afterwards I get an old-fashioned bootscreen followed by an old-fashioned homescreen. The settings page however shows that Android 10 is in use.

What is the meaning or the reason of the old-fashioned looking UI?

This can be solved by using system-images;android-29;google_apis;x86_64 instead of "system-images;android-29;default;x86_64".