Sometimes writers say true things about the overall nature of publicity, promotion, and the publishing industry; but alas, not always.
If this power could be used for good, it wouldn't be this power.
Writers say many true things about their own experiences with publicity and promotion.
Didn't need the user icon to know you're white and male.
So many problems are solved simply by knowing enough verbs.
Don't use metaphors in fantasy; your readers will take them literally. Or they may take them figuratively - but if so, they'll also take your magics and transformations figuratively. Either way, you're in trouble.