Larry Niven is not up everyone’s taste, but I find that his Laws, such as they are, stand up reasonably well. On writing, he said this:

f you’ve nothing to say, say it any way you like. Stylistic innovations, contorted story lines or none, exotic or genderless pronouns, internal inconsistencies, the recipe for preparing your lover as a cannibal banquet: feel free. If what you have to say is important and/or difficult to follow, use the simplest language possible. If the reader doesn’t get it, then let it not be your fault.

I wish this was taught in schools.