>>gnitin+(OP)
Some apps like Obsidian needs permission to access every file on the device. It is surprising Obsidian isn't getting called out on that very much.
>>billfr+Iv
If I'm not mistaken this is because without this permission they can only see audio, video and image files. You wouldn't be able to use it comfortably to do it's job.
Personally I use it with Storage Scopes on GrapheneOS.