Dang could train the writers/editors but due to the way posts on HN need to be interesting dang might need to train the writer/editor a lot or find a rarer type of writer/editors which will probably cost more.

Writing/editing skills aren't enough. Just as important, maybe more important, is being steeped in HN culture—hence the analogy about being dipped in a vat. Or, here's another analogy: writing about your startup for HN is like walking through a minefield. There are a lot of ways to blow yourself up. Only some of those have to do with bad writing as such.

I get what you're saying, but professional editors, properly trained, would certainly grasp not only the style but the spirit of the HN community. Or you can hire HN members. And in any case you'd still have the final word.