Yes, the topic comes up every now and then. This must be a "now" ... or maybe a "then".
We try to capture moments and slices of time with our cameras. The JPG image or RAW sensor data we save rarely reflects the reality we see. There's a disconnect between the sensitivity of the sensor and human perception. Photo manipulation, whether it's RAW image processing/conversion or "photoshopping", is a way to merge human perception with recorded image data. If a merge isn't possible then maybe a compromise is. Sometimes it's just a matter of bringing out details and sometimes it's about pixel manipulation. One enhances reality and the other changes it. I think both manipulations are perfectly acceptable as long as we're honest with how we got the result. Both manipulations will take you on a creative journey.
Personally, I am not a pixel manipulator. I see myself leaning toward the Ansel school of thought. Every negative (digital or analog) falls short of what I perceive and I see my role and responsibility as the one to bring out the details hidden in the source data. I'm also OK with pixel manipulators but it's just not something that interests me.
Let's also not forget what the JPG engine in our digital cameras do. The algorithms in our cameras boost/cut colors, contrast, sharpening, etc even when all the settings are set to 0. Anyone who thinks otherwise doesn't understand how a digital sensor works. RAW image data is pale and flat and that's after decoding the Bayer matrix which is a whole separate can of worms to sort out. Analog photography was heavily influenced by the chemistry built into the films and papers. There was a little bit of that JPG engine in there too. You could get papers with higher/lower contrasts. Films tailored for different color schemes were available as well. Even now we have something as extreme a Portra and Ektar.
All of this is manipulation. It's just a matter of what kind, by whom, and how much.