Be Bold with your editing, young man (or woman)! If you feel like a paragraph, or article, needs a complete rewrite, then do it! Do not worry about whether the original authors would or would not like it. If it really sounds questionable, bring it up on the talk page, you might work out something with others that care. The history section of the article will keep track of edits allowing mistakes to be undone.
Remember, being bold is not the same as being an idiot or being reckless. Just keep that in mind, no crap articles without a meaning, no vandalism, etc.