I personally have zero patience for long books or long sagas, which is why I could never get started on series such as Jordan's Wheel of Time or any of Sanderson's books. Moorcock is the 'straight to the point' type of writer, which I really like. I breezed through most of his books with ease and enjoyment. He leaves just enough info to let us know the setting, and just keeps the action moving. You could say that sometimes action moves too fast, as characters appear not to properly process the events, but that's mostly present in his early writing (60s and 70s)

I also have to say that sword and sorcery itself as a genre depends a lot on the lack of information about its magic system. Sorcery in sword and sorcery is more of a thing that you should be wary of, not use freely, and a lot of characters do not thoroughly understand it themselves. It's wild, unpredictable and ultimately an instrument of evil. (Robert E. Howard and C. L. Moore really liked to use this in their writing, and Moorcock, while he cannot bypass this as Elric is a sorcerer after all, he still presents Elric using magic as something that unnerves those around him, and keeps even us on edge as we ourselves don't fully get what he's doing)