In one hand, I think that if there's one lesson to be learned from NMS is that we must never, ever, trust the hype. And in that case, the hype was clearly brought upon us by the devs themselves, who lied and showed scripted videos in game shows and in the media in general telling everyone that it was gameplay - or used a non-final build to promote the game on IGN. They proved to me that developers who promote too much of their game in the media are most likely overselling.
On the other, total silence is also suspicious. Developing houses like Paradox have really open developer diaries within their forums that don't really promote the game, but instigate discussion between hardcore fans. If Frontier did this, I think the game would only benefit from it, since the vast majority of casual players is not in the forums in any given game (just to give an example, my two brothers and a cousin of mine all play elite, some are damned billionaries and they never even subscribed to the forums) leaving only dedicated and passionate fans, who would give much necessary feedback to design decisions.
