This is only the second business writing textbook I've read/taught from, and my standards for business writing books were never high in the first place. But this is incredibly boring. Even by the standards of a textbook, and by the standards of a business writing textbook. It's just a chore to read this book.
That being said, the material in it is fine, it's just hard to really appreciate that because of how bland and off-putting the writing is.