Streamline your workflow with file uploads to Loop workspaces

milkyway123 Internal accounts with the link have edit access, how they get the link doesn't matter. 

This uses your tenant default sharing settings, which can be changed from the SharePoint Admin center. 

In a normal case, this is the case. But not for the new upload option in Loop Workspace. 
Take this configuration. In a normal case, a shared file has the permission "People with existing access (or specific people) can read the file". Not if users upload the file via Loop Workspace. So Loop clearly ignores the default sharing configuration.