With all due respect I think you might be missing the point.
When you write non-fiction you are trying to convey facts. That's why all these guides focus on non-fiction because, in truth, you are conveying information more than anything. So rules like the ones in these guides bring you closer to the ideal because they strip away anything that is not relevant to relaying the information.
Fiction on the other hand is really the act of conveying your own persona to the reader. Even though you are telling a story its a story born out of your mind and is therefore a representation of you. So in contrast the more rules you put on that the further you get away from your intended purpose.
When you write non-fiction you are trying to convey facts. That's why all these guides focus on non-fiction because, in truth, you are conveying information more than anything. So rules like the ones in these guides bring you closer to the ideal because they strip away anything that is not relevant to relaying the information.
Even if something is non-fictional, it can still be a story. The most engrossing non-fiction content (such as investigative journalism or essays) has more in common with fiction (in the sense that stories are relayed and emotions are worked) than it does with dry parroting of facts.
Learning at least the basics of storytelling and being able to write good fiction are essential skills for non-fiction writers who aim to be engrossing.
Rules in this case are just like rules that could be applied to hacking, or startups: if you don't understand why it's there, you probably shouldn't break it. If you do understand, and know why it doesn't apply to your situation, go ahead.
Conveying your persona isn't just about yourself; the recipient needs to be able to recieve it. Experience has shown that there are things you can do to make that easier for them. Rules in fiction would be to do those things, and avoid the things which make it harder.
When you write non-fiction you are trying to convey facts. That's why all these guides focus on non-fiction because, in truth, you are conveying information more than anything. So rules like the ones in these guides bring you closer to the ideal because they strip away anything that is not relevant to relaying the information.
Fiction on the other hand is really the act of conveying your own persona to the reader. Even though you are telling a story its a story born out of your mind and is therefore a representation of you. So in contrast the more rules you put on that the further you get away from your intended purpose.
At least, that's the way I see it.