Matthew, that is not the point at all as far as I can see.
The point (I think) is that the rules of old D&D make no presumption as to whether it is Frodo or Gollum who falls into the Crack of Doom; the dice decide. It is thus unsurprising that people who desired a game governed instead by the rules of drama found D&D unsatisfactory, and that TSR and WotC altered the game in conformance with those desires.
Not in this timeline, Doc!Written after President Carter and the oil crunch
Not in this timeline, Doc!
Hmm...interesting. So Star Trek is S&S and Babylon 5 is HF?
I suppose Hercules and Xena would be S&S?
But that's not a concern of genre but of delivery, right?
In High Fantasy, the plot dictates Frodo or Gollum's success.
In S&S, the plot dictates Conan's success.
In D&D, the game mechanics determine the PC's success.
Which makes the "genre" of fantasy D&D emulates a non-issue since the GAME element overrides any genre convictions the game might try to elmuate.
(Which kinda renders the OP's critique invalid: since success or failure determined by game mechanic knows no genre, c.f. World of Darkness, Star Wars, or Chuthulu are all clearly not S&S but yet effective RPGs)
Eh, Keep on the Borderlands, frontier town, what's the diff?Is D&D cowboy wisdom? No.
Unless it's Tracy Hickman's version of D&D.In High Fantasy, the plot dictates Frodo or Gollum's success.
In S&S, the plot dictates Conan's success.
In D&D, the game mechanics determine the PC's success.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.