Yes, that’s true, but as the histogram and the tone curve are two separate palettes the amount of switching back and forth between the two of them for a simple RGB adjustment is infuriating. The deep issue here is that with all the curves visible in the Histogram window, it’s difficult to read any one colour accurately: when I switch in Tone Curve to green I just want to see the green histogram in the Histogram Palette.
In the absence of histogram overlays on the tone curve (would be very useful), a traditional levels window and levels controls would be a nice add. No need to enable or use that palette for those who don’t like levels (I agree tone curves are better as you can set white balance properly while improving tonal contrast, but with the current non-automated histogram preview, it’s unuseable).
I’m already set up like this Christian with Histogram and Tone Curve on the left hand Palette column (with the other adjustment palettes on the right). Doesn’t change having to switch RGB controls in both for each colour. It’s a very inefficient workflow. Ideally I’d see the Histogram for the RGB contol I’m working with directly under the tone curve. I do not want to see all the colours together under the Tone Curve. That would defeat the purpose.