I agreed with almost everything you said, except for the part about rejection being a myth. Because I have faced outright rejection when submitting proposals for books, short stories, and other publications. So, yes, rejections are real—because they don't like what I write, because they have a different approach, or simply because they don't understand it conceptually. Sometimes, I've even been rejected for being Latino, without even evaluating the quality of the manuscript. So yes, the fear of rejection can stem from real experience; it's not just something imagined. However, one can learn from those rejections to improve their craft.