I think of “clutter words” as “flutter words.” They may look pretty as they flutter around the substance of a sentence, but they are distracting. William Zinsser, author of On Writing Well, says that “fighting clutter is like fighting weeds–the writer is always slightly behind.”
Always consider readers while drafting and revising writing. If passages explain or describe details that would already be obvious to readers, delete or reword them. Readers are also very adept at filling in the non-essential aspects of a narrative, as in the fourth example.