Sylvius the Mad wrote...
This is only true if somehow you don't count dialogue or inventory management as gameplay.
And I'd love some justification for that position, given that both takeplace inside the game.
I don't. Inventory management, "story" (the nebulous concept that includes the only period where the game models realistic human interaction) and gameplay (where the combat and
main action of the game occur) are three different entities.
Inventory management is UI, which is an abstraction for the purposes of interaction (either player or character) with the game world, gameplay is the highy unnatural special state where the world dramatically diverges from all established physical laws in our world, and "story" is where (for the purposes of the game) you act as a real and believable person within the game sphere. Each is an independent area.
Taking place in the game is a neccesary, but not sufficient, condition for gameplay.