One should be self-expressive, but I don't think syntax is an opportunity to be so.
Sure it is. Textual expression is a function of both form (syntax) and content (characters). Not only that, but TMTOWTDI enforces overlap between the right way to do something and the coding preferences of the implementor.
Okay, fine. It's some form of self expressions; but it's petty self expression. Writing in all lowercase is unlikely to establish you among the classics, even if your readers can still understand all of your sentences. That sort of "creative syntax" would be expected in graffiti, not Hemingway.
Sure it is. Textual expression is a function of both form (syntax) and content (characters). Not only that, but TMTOWTDI enforces overlap between the right way to do something and the coding preferences of the implementor.