[jillyboel]

Google will not let you pick the root folder, making it impossible to sync everything.

Note that Google's and other American Big Tech apps do not have this issue, because Google only cares about taking permissions away from "small" players.

[Saris]

Nextcloud isn't really designed to sync the entire device, it's meant to sync your Nextcloud folder to a subfolder somewhere which works fine with the new storage access permissions.

[jillyboel]

It's designed to sync the files the user wants synced, be it files produced by the camera app or some other app that operates on a directory on your device, such as your Downloads folder, audiobook folder used by your audiobook app, or the notes folder where your notes app writes the notes.txt, or just straight up everything.

[tadfisher]

Google's comparable app (Drive) also cannot pick the root folder. As of Android 11, even apps with MANAGE_EXTERNAL_STORAGE cannot access the root folder.