Huh? I don’t give apps like YouTube access to my files. I don’t upload so they don’t need it. I don’t even think it has asked because I’m not clicking the upload button. YouTube doesn’t get access to my location either. It does have access to local connections because of YouTube on my TV, but that’s it.
Do you know how sandboxed file system storage works? Have you ever made an application? Do you think things that run on the cloud have access to everything else on the cloud? I’m not sure what you’re getting at.