Complex sentence: Royce presented this model as an example of a flawed, non-working model; which is how the term is generally used in writing about software development--to describe a critical view of a commonly used software development practice.
Split into simpler sentences: Royce presented this model as an example of a flawed, non-working model. This, in fact, is how the term is generally used in writing about software development--to describe a critical view of a commonly used software development practice.