The thing that marks writing as machine-produced is not any single word. It is that the text is perfectly fluent and says almost nothing that could only be said about this subject — the paragraph would survive unchanged if you swapped the product for a competitor's. Readers register this quickly, and what they conclude is not "a model wrote this" but "nobody involved knew anything specific", which is worse.
So a rewrite alone does not fix it. Softening the vocabulary produces the same empty paragraph in a friendlier register. That is why section three exists and why it is the one to read first: what the draft needs is the number, the date, the name, the thing that happened — the specifics no general model could have supplied, because it does not know them and you do.
Section two is there so the effect compounds. Having your own tells quoted back at you a few times changes what you write next, which the rewrite by itself never does.