I also don't particularly see the point of these sorts of "challenges". The RAW file out of the camera bears little resemblance to what your eyes perceive the scene to look. The highlights are much lower and the shadows much lighter to my eyes yet the image may have very dark shadows and the highlights near clipping or blown. When I post process the image, it is to make it close to reality, to what my eyes saw not what the camera actually records.
This obsession with some where "you cannot do any adjustments in post process" is a relic from film days where the average Joe had no way to adjust an image taken on film as they just sent it off to the photo lab and it came back "as is". If you were shooting negatives, the lab actually did some adjustments to make the print look decent. The only "untouched" images were generally slides. The few that actually developed their own film images probably had more chance to adjust certain aspects for printing but they still had limited ability to do anything about making it look more like reality, especially as film was generally way lower in DR, way lower DR than your eyes.
Again, I think this is just an obsession with film and the "nostalgic" belief that film was somehow pristine and virgin when in fact it wasn't for the pro's, just the amateurs who didn't do their own processing and printing. For me, the whole purpose of photography is to make the final image look closer to reality, closer to what my eyes saw, not what the camera "saw" because the camera "sees" things differently to what my eyes actually saw in real life. To add to this in the film era, there is pre-photo manipulation which includes flash, special lighting (colour castes etc), removal of rubbish from the scene (now we can clone it out!). This was mainly done in the film days as it was more difficult to do in processing and printing. Yes, it is still done in the digital era but it is less important than it once was. What is the difference in boosting shadows in post process compared to boosting shadows with lighting or flash? Changing white balance in post compared to putting a filter over the lens or use special lighting or reflector? How the heck do you do that with a bird or animal in the wild? However, and again, the bird looked different in reality than what the camera gave me as a result due to the way the camera captures the range of tones and light compared to my eyes. There is no way to do a controlled shoot with a wild bird or animal as it an anathema for the pristine wildlife image that the pundits demand. I mean, in many ways it is absurd.
Film used in a creative way
due to it's limitations is a different story. Film with certain look due to the lower DR, or certain colour saturations, or grain etc but that was an inherent film limitation but it didn't make it right, just different. However, that can still be achieved by judicious post processing for digital, but oh wait, then here we go again that you can't do post processing in the digital realm to make it look like film.
The point is, there is always some manipulation made whether it be pre or post photo whether in the film or digital realm. Why is pre photo deemed to be the benchmark when post photo can be so much better and more accurate to your eyes and simpler. Why are some trying to make out that it is better to pre photo manipulate compared to post photo? Why is that an advantage?