This often gets brought up, but it's only because of a similar ill-discipline to what the comment you replied to is talking about.
AOSP has basic apps for all of those use cases, but presumably because it's much sexier to work on closed source in-house apps that get to be updated as often as the team feels like instead of being forced to work in the margins of the OS update schedule... they languished to the point of unusability.
I'm not even sure if they'd all run on the latest version of Android, some of them are still using Kit-Kat era UIs last I checked
It's not only that they are outdated, phone app was officially deprecated this year and I'm pretty sure it was the last one, so now android 'core apps' are officially dead
AOSP has basic apps for all of those use cases, but presumably because it's much sexier to work on closed source in-house apps that get to be updated as often as the team feels like instead of being forced to work in the margins of the OS update schedule... they languished to the point of unusability.
I'm not even sure if they'd all run on the latest version of Android, some of them are still using Kit-Kat era UIs last I checked