I want gameplay, I could care less about some big dumb story.
The ludology/narrative split in games is always there even if you pick only one side. Walking sims still have gameplay and multiplayer first person shooters still have lore & world building.
It has a fleshed out world with characters, big green blocks you can touch to get lore and story progression via action. Smashing the argent accumulators opens hell and progresses the story.
You may have ignored all that, but it is there.
'Just gameplay' is beat saber or DDR or a gameplay prototype. Go play them.
John Romero created the original Doom, not 2016.