It doesn't have to understand any of those in any "human" sense, where it would be able to articulate what it understood on a meta level, etc.
It would just have to reinforce the right patterns and fuzzy connections that lead to success in writing credible looking articles....
We're probably at a point where we can manufacture shallow fakes of the current writing style, and I'm sure techniques like this will become prevalent (because convenience), but I feel you're missing the point of what I'm saying. It does need to understand these things. If it doesn't, then what it is is a mechanical reproduction of a current style of writing: that's a completely different category of thing, it's not even close to similar.
There are no new inputs in this case because we got replaced editors with NN.
Or their own work, as ranked by readers (e.g. their past posts that had the more views and better engagement).
Same way as humans? Via training on new inputs?