And yet here I am, aware of a good number of spells used by the Sorcerer Supreme that require supplements to make function. Sure, maybe there is more prevalence in what one sees as hedgewitchery, and there are of course religious practices involving sage, but my point I feel stands.

[Why was there so much sage when there wasn't even stuff to use it with?]

I swear, this place has a serious lotus eaters vibe.