My point is that writing is like walking -- at first, you only have one way to walk, the one that keeps you from falling onto the carpet. Only later do you learn how to dance. It's the same with writing -- avoid obvious mistakes until you're skilled enough to use them for an intended effect.

That seems to be a different point or a muddled metaphor - people learning to walk are accidentally dancing (badly)?

I have not seen it established that passive constructions - where they are appropriate - are harder to use correctly or well. I have seen it asserted countless times, usually by people who don't know their passive from a hole in the ground and always without accompanying data.