Nope, just updated a few weeks ago
The best way to explain this is as follows.
The DNG isn't an image. It is raw information about how that image is to be constructed by the editing software.
Are you familiar with old-school film photography? The camera had a roll of unexposed film inside it. Every time a shot was taken (look through viewfinder, focus, press shutter release) that frame of film was exposed to the light that hit it. This exposed frame of film was NOT an image: it was a LATENT image, all the information needed to produce an image of the scene you had just captured was stored on that frame of film, but in order to turn that image-in-potential into an actual image: you had to develop the film.
It is exactly the same with a DNG file. It is not an image: it is an image IN POTENTIAL - it has to be constructed by the editing software.
The reason you see an image when you look inside the DCIM folder with your device/PC browser instead of just seeing a blank icon denoting a file type is because the DNG stores a very low quality thumbnail JPG of that scene within the structure of the DNG file.
Here comes the bit that still confuses a lot of people.
DJI drones capture two images (bear with me) every time the shutter button is pressed.
One is the full resolution DNG (the latent image).
The other is a piss-poor version saved to JPG in a miniscule file size that is stored as a shot identifier (like one frame in an electronic contact sheet). If you drag and drop the tiny JPG into the editing workflow by mistake: all you will see is a really badly fuzzy and pixelated mess... because that's exactly what it is: a fuzzy pixelated mess.
