This is the key assertion underlying your comment, yet you just wave it off by referring to unnamed "[handbooks] on highly effective communication in organizations".
My no-fluff feedback for you: Your comment would've been far stronger if you simply specified these unnamed handbooks, and summarized their argument, as opposed to fulminating + offering a handwavey argument-from-authority.
(Curious to see how you'll take this no-fluff feedback. Let's see if you're management material by your own standards.)
EDIT -- here is a LinkedIn post by a lady who wrote a book on workplace communication called Radical Candor. Her post recommends plenty of fluff for the boss, and to be frank, I think she makes some pretty good points: https://www.linkedin.com/posts/kimm4_how-can-you-practice-sa...