Is there no beauty in painting vivid pictures through colourful expression? Sure, being terse makes consumption faster and easier, but don't you trade that for the tool of directing the reader's imagination? I guess the skill is in being terse yet still descriptive?
The examples in this tool can be misleading, especially if you haven't read the classics like _The Elements of Style_ and _On Writing Well_. Ridding your writing of fluff is central to their teaching, but not at the expense of detail. "Vigorous writing is concise. A sentence should contain no unnecessary words, a paragraph no unnecessary sentences, for the same reason that a drawing should have no unnecessary lines a…
Be very careful with the Elements of Style. Not everyone shares their prescriptions (and their descriptions are mostly wrong).