Yep, that's what we thought as well.. but it doesn't work.. we have many issues with modified versions of Android not being able to access local files to upload.
#[2] I was reading about storage on android and it looks like it should be possible for you to prompt for the storage picker: “Additionally, both modern and legacy Android apps can open the system file picker interface to have the user store or load one or more files/directories on their behalf. This type of access doesn't require any of the permissions listed above. “
From: https://grapheneos.org/usage#storage-access
Personally I’d prefer this method as you’re just uploading individual files anyway, no reason to ask for full access to all pics on a phone.
Discussion
.. Have had