I'm A Banana
Potassium-Rich
I think it's a useful breakdown.I will refer you back to post #136 (http://www.enworld.org/forum/showthread.php?492891-Do-you-care-about-setting-quot-canon-quot/page14) where I tried to list the various types of canon, and why they provoke different levels of confusion and/or spirited discussion.
Part of the confusion I see here is that people are indiscriminately talking about differences in canon and using examples from 1 & 2 (base rules and base lore) and interchanging them with 4 (campaign worlds). The base rules and base lore of "D&D Elf" is not the same as the FR Canon for the Elf. Just thought I'd throw that in.
FWIW, I still use the 1983 GH Folio, and think everything after that is an abomination and should be set on fire. But I'm pretty picky like that.
Using that framework, I think "base lore" and "campaign world canon" are kind of swappable - base lore is just a kind of "generic" campaign world. If you had a setting where githyanki and githzerai got along and built and empire, well, fair enough, that's why your world has its own name and isn't "generic" D&D. If you say in generic 6e D&D that this is the case, alarm bells ring - now someone who comes to the table fresh isn't going to share assumptions with someone who came to the table in 3e and thinks the new lore ain't any better than the old.
The issue crops up most prominently when "base lore" is changed and thus a question of which base lore/generic world you can safely assume for the game rises up. Changing "campaign world canon" has the same effect, but on a more limited audience, since specific campaign worlds are always a bit more limited and focused than the base game.