Except that, according to Skip Williams, he (Skip) was largely influential in the move toward codification. In interviews, Skip stated that Gygax, originally, did not want more rules codification- it was many players that wanted them. D&D players would call both Gary's house and TSR asking for rules clarifications and how to handle situations not covered. Gary and many others at TSR employees did not understand why players were calling. To Gary and many TSR employees, the players calling missed the point that individual DMs should be deciding those answers themselves. Furthermore, Skip as a player, had a strong preference for games with codified rules, wanted more rules codification for D&D, and talked Gary into the benefits of rules codification (including for organized play and tournaments which Gary was already interested in pursuing).
We also know from Gary's post 3e release interviews on this site and elsewhere, that his preferred edition to run (at least in later years) was OD&D with the three orignal booklets and a few house rules on character generation. Even when running AD&D, he states that he ignored several of the rules which were, originally, included at the behest of his players (I am not clear if this was always the case or something that happened with time).