Lanefan
Victoria Rules
Not a myth, but also not as extreme as the following quote:In a word: bullpoop.
There is this myth that D&D in the past was some grand test of grit, skill and luck.
Risk mitigation, resource management, and making a buck. Sounds like adventuring to me.You sent dozens of PCs into the dungeon wood chipper and eventually you ended up with a group of hyper paranoid 2nd level PCs who would steal every item worth a gold piece, avoid almost any action with even a whiff of risk, and were the 2nd biggest source of henchmen paychecks aside from monarchy and evil overlords.

By those who bought into the Dragonlance style of play, and our experiences probably vary greatly there.That's not how the game was played for the majority of its lifespan. It was played like Dragonlance.
Other than the DL series, there wasn't much narrative in most 1e adventures; and the DL adventures are pretty much pure railroads. There was some linear design now and then, but I see that as poor adventure writing rather than something worth praising.Adventures were fairly linear, highly narrative,
2e adventures leaned a bit more into the narrative, often by giving loads of backstory that I'd have to strip away so I could fit the adventure into my own setting and its emergent story/stories.
D&D has always been about fighting powerful monsters. The "epic things" piece is entirely optional.and focused on the PCs doing epic things and fighting powerful monsters.