lacconic

Yes. In simple terms the DNG is a descendent of TIF.

A DNG from a camera typically stores unrendered data. Whereas a DNG from a scanner almost always stores rendered data because a scanner only ever needs to capture a very limited reproduction of a scene. A digital camera needs to deal with an actual scene.

So when a user manipulates a DNG from a scanner in Adobe Camera Raw — the debayer stage is skipped and the ACR tools simply operate on a TIF stored inside the DNG.

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People quite understandably believe that the DNGs they generate by a dedicated scanner and scanning software such as a VueScan hold undebayered RAW image data — when its actually just a TIF wrapped in a DNG.

The same result as when Photoshop allows the user to wrap a JPG or TIF in a DNG…

As you say — if someone is using a DSLR to capture their negatives — is strongly recommended to archive the (real) RAW/undebayered files.

There are few if any advantages in archiving a DNG over a TIF from a dedicated film scanner unless the scanner (could provide the undebayered data).