Russ
Istar
I view about 60% of the writing advice that I've seen as being in that category. It's not that the advice is wrong, but that it's for the choir. If you want to succeed you have to let it loose, whatever "it" you have. Throw yourself into your prose and your story and don't hold back.
I am not sure I have ever seen writing advice designed or intended to make your prose blend in with the crowd, or cause less emotion, or harmonize with other writers. Can't recall it. Hell, I think the claims for writing advice are usually "Make your work stand out" or "How to write a bestseller."
Is there an example of writing advice that you point to so I can better understand what you are talking about?
I would also suggest that before you take centre stage at Carnegie Hall to unleash your novel dance or discordant originality brilliance, that it would be prudent to learn the basics of movement and how to play your instrument. Just like you should learn the basics of driving before you start left foot braking and using snow banks to scrub off speed like Hanu Mikkola.