Want to expand on exactly why it is a nightmare? Core idea seems to be about focus: decide one thing, "work like hell" to do that thing, then move on to the next thing.
> pick an aggressive date to ship the first headline
From the way I've seen this done, the headline is too big (despite the article calling out a realistic example) and the timeline is too aggressive (not addressed at all). Maybe it's fine for a startup or small org where things can be ignored, but I've got lights to keep on and users to support, and "work like hell on this and only this" doesn't really fly, or if it's the actual expectation, is awful.