How can you safeguard against producing homogenous stuff. There are countless books and films made without the use of these tools that prove the point. Any tool effects its user and the product of its use. Oil painters tend to paint in certain styles because of the qualities of the paint, brushes, thinners, canvasses, etc. Wood workers are impacted by the tools and materials they use.
Every artist is affected by the tools and materials they use.
Since Screenwriter and StoryView haven't any impact on the content of a story, I'll address this question as it concerns Dramatica. Dramatica presents one of many standards by which a writer may examine, evaluate, and interpret a story. It is not, nor should it ever be considered to be, the ONLY way. Dramatica has its strengths and weaknesses as a writers tool, but the greatest weakness of any tool is to be thought of as the only tool. Just because I have a hammer doesn't mean everything is a nail to be pounded on.