The benefit of the Fade command is you can put all of your edits on one layer and independently adjust their opacity as you edit rather than affect the entire layer with a global adjustment.
Yes I'd agree, but reducing layers by combining edits is a double edge sword. On the one hand it reduces the file size and in some cases is faster, but on the other, makes it more difficult to undo or change later. It's a situation with no definitive answer, rather it's dependent on the image and the edits required. Many times I find it quicker and easier to address a blemish in the D&B layer/layers. As blemishes are one dimensional that show up because of highlight and shadows, the advantage there is you're not moving texture just decreasing or increasing light on the blemish to hide it.
Sorry
@ronlane didn't mean to get off on a tangent. In your processing journey, have you tried using the Texturizer filter on a 50% gray layer set to Overlay or Soft Light. Sandstone is one of the preloaded textures that works well on skin, but I also have a library of custom files that I go to occasionally. The advantage of the TF over emboss is it gives you direction control of the light.