But you skipped over the parts where all of what is in those books is labeled 'guidelines'. The first sentence of the introduction is telling "
These rules are as complete as possible within the limitations imposed by the
space of three booklets. That is, they cover the major aspects of fantasy cam-
paigns but still remain flexible. As with any other set of miniatures rules they are
guidelines to follow in designing your own fantastic-medieval campaign." (emphasis in the original).
So, suggesting that one should restrict oneself to only a very specific set of ideas and practices which one imagines are "designed into the game" certainly goes against the spirit of the original game. Now, I am not going to dispute with you what sort of game GARY conceived to run HIMSELF, but that was his business, and sure, the material he provided is germane to that. Nobody is arguing with that. I am merely suggesting that telling people 'D&D is no good for X, use some other game' doesn't comport with the underlying spirit.
It is in that spirit that I make suggestions.
PS: yes, Dragons 11-250 are on my shelf, along with a lot of other early publications