Sadly, good, solid DRM (Here's an encryption key, an encrypted file, and a secure way for me to limit when and how you can use those) is the ultimate form of Snapchat.

If you don't have DRM backing it up, the scenario is "Here's a key, a locked box, do whatever you want with the decrypted file." Which is less secure than being able to actually limit usage of the decrypted file.

Nothing here implies that I think DRM is a good thing, mind you. I just think saying something is "just DRM", as if DRM wasn't basically encryption + limitations on use.