> This doesn't make sense - the writer is hardly going to say its gonna be a hatchet job
The writer doesn't have to make any representation at all that it will have a spin.
> and if he said it was going to be anything other than positive then Scott Alexander would have mentioned that as it would have made his caution all the more understandable.
It would have made his projected sense of betrayal after cooperation in the piece less understandable if the journalist hadn't explicitly promised favorable coverage.
To characterize intended tone before research is complete is to hold oneself out as doing propaganda (promotion, specifically, when what is promised is positive coverage of a subject) rather than journalism, and it's obviously a betrayal if someone offers you promotion and then turns around and reveals information you'd rather not have revealed, whereas a journalist doing neutral journalism revealing facts about an active participant in public debate that that participant doesn't want publicly disclosed is...not even remotely noteworthy as such (though the facts so revealed might be.)