Emphasis mine.Some of the most interesting stories in other mediums are ones where there's no right decision to make, just decisions with different consequences.
Those other things aren't games.
It is obviously perfectly fine for people to engage in whatever degree of storytelling they like in their RPGs -- but that includes both "only emergent" and "next to none." Players trying to make it through and out of a trap and monster laden dungeon, carrying as much gold on their persons as possible, is still a completely viable way to play D&D -- regardless of edition (although some editions make it easier than others, or at least emphasize different things). Trying to figure out what the GM has in mind for a specific challenge is a core part of that sort of gameplay, and the GM coming up with ever more twisted traps and encounters is the way it stays fresh.
Obviously not everyone -- or even many -- plays that way. But I don't think we should just handily disregard it as a valif form. If anything it is the original form, and everything else is a development after the fact. But those "evolutions" are not inherently superior or even preferable for everyone.