It isn't so complex. I mean, in the Operator Stack you have to insert the input (vertex, edge, faces etc... ) the the Operator ( Scale, Clamp, Curve) and, in the end, the output (Vertex etc...)
for simple task isn't so complex, but, for more PRO project, yes...
It's like Particle Flow. At the begin was so complex, but after a lot of videos, tutorials etc.. you were able to understand it.
The same for the MCG. I think that it's a very strong tool, but you should be a programmer, not only a good a 3D visualizer/modeler.