Yeah, I hate it too. I think it has the potential to be frustratingly confunsing to a new player.
Do you have a source for this?
Checking Amazon:
"Player's Handbook 2: A 4th Edition D&D Core Rulebook"
"Arcane Power: A 4th Edition D&D Supplement "
"Forgotten Realms Player's Guide: A 4th Edition D&D Supplement"
So while Remathilis breaks Supplements into General and Campaign, ge is still correct as far as I can tell about what WotC is promoting as Core.
Edit: Checking the covers on the WotC website:
"Monster Manual 2//Roleplaying Game Core Rules"
"Eberron Player's Guide//Roleplaying Game Supplement"
"Arcane Power//Roleplaying Game Supplement"
In 1981, with very limited funds, I asked for the Blue Box Expert set for Christmas, thinking that I would simply skip Basic and go straight to Expert. Nothing in the Sears Catalog indicated this would be a problem. Fortunately, my birthday is close enough after Christmas that I didn't need to wait long for a playable game. No matter what you do, someone will make a mistake.
Or maybe if you're into another RPG but not in the d20-ish loop. Why not just make it totally Wizards and call additional books "booster packs"?If you know nothing about RPGs 'core' doesn't mean diddly to you one way or the other.

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