People think of D&D as being the most generic of generic fantasy, a sort of baseline fantasy default but in actuality D&D is this weirdly extremely specific thing where in many cases entire mechanics or setting pillars are all derived from one guy. Like for example, the entire idea of rangers dual wielding weapons is derived from one wildly popular tie-in novel character, up to the point where in 5e the rules were subtly changed to make it easier specifically to dual wield scimitars (something that the 3e rules made weirdly awkward)
D&D is very much like Warhammer 40,000 in the way that the setting itself is actually very cool and deeply fascinating if you want to tell all manner of stories, but maladjusted weenies will delight in using a single line out of context from supplemental material that hasn't been in print for twenty years to insist their interpretation of the LORE is accurate and absolute and beyond argument.
