How is it that the decompiled camera code has interesting variable names and even comments? I was expecting it to look more like the decompiled code from this

How is it that the decompiled camera code has interesting variable names and even comments? I was expecting it to look more like the decompiled code from this article... With made-up and uninformative variable names. You mentioned collaborating on annotating the decompiled code. Is the linked code something created manually based on the "raw" results of the decompilation? Or does the toolset allow you to annotate memory addresses etc in such a way that when you invoke the decompilation it uses the nice names automatically?