I would say it does have that set of simple components: wrapper, section, column, image, button and text are all you really need. These are the ones we set new developers up with. You can create fully client-compatible versions the more advanced components with these components.
Everything else they provide is just gravy for situations where development speed is more important than client support (as we see it) or when you know you’re not going to worry about Outlook users of a certain generation.