Effective writing that positively promotes your image and your brand is no different. Wordiness usually does not produce effective writing, especially in the formal settings for which technical writing is directed. Thus, effective technical writers will seek to eliminate wordiness as much as possible.
Often, failure to recognize the difference between spoken English and written English can allow wordy expressions acceptable in spoken arenas to seep into writing. Take, for instance, the example sentence in the graphic above. On the grounds that appears commonly in spoken vernacular. But this expression communicates the same meaning as because; the only difference is added words. Added words without added or clarified meaning is wasteful and thus makes writing less effective.
Compare the example sentence with this tighter, more effective one.
On the grounds of falls under the same heading. Because can effectively substitute for this expression as well.
So make sure you eliminate wordiness on the grounds that it makes your writing more effective. Better communication conveys a better image in the mind of your audience. And that makes a better perception of your brand in their minds.