Am I crazy to think a DM could get the adventures for Tyranny of Dragons and use that as their story bible? It seems one could read through the published adventures, see what the overarching story/plots/themes are, and then make adventures to fit in with said story/plots/themes.
Is it as perfect as having the whole story bible laid out in front of you? No. But is it workable? It seems like it to me. Especially if the DM in question bought the adventures with that mindset.
Thaumaturge.
My impression (and I could be wrong about this because their OP info seems kind of vague as all get out) is that there are, essentially, three kinds of adventures.
First are at-home adventures, also to be used as Encounters adventures, which contain the "main story."
Then there's the other OP option, which is a bunch of other stories related to that main story.
Then there's Epics, which is a one-off related to that main story.
Not to mention board games, video games, novels, etc.
So anyone who wants to get the WHOLE story will have go go whole hog on D&D media. That's the point of a transmedia brand, after all -- get people to buy more stuff!
Which means most non-Organized-Play TTRPG folks are probably only going to get a taste of it, possibly via the "main story" of the at-home adventures, and maybe a little bit extra.