You know I can't confirm it, but this FEELS like more stuff than we had in the first year of 3.0e. I wonder if others can confirm or deny that?
The first year of D&D 3.0 had (only counting Wizards of the Coast releases, August 2000 to July 2001):
D&D Adventure Game
PHB
DMG
MM
Psionics Handbook
Hero Builder's Guidebook
Sword & Fist
Defenders of the Faith
Tome & Blood
Sunless Citadel
Forge of Fury
Speaker in Dreams
Standing Stone
Return to the Temple of Elemental Evil
Heart of Nightfang Spire
D&D Gazetteer
Living Greyhawk Gazetteer
Diablo II: Diablerie
Diablo II: To Hell and Back
Forgotten Realms Campaign Setting
Monsters of Faerûn
Pool of Radiance: Attack on Myth Drannor
Into the Dragon's Lair
12 issues of Dragon
6 issues of Dungeon
So far, 5e has:
Starter Set
PHB
DMG
MM
Hoard of the Dragon Queen
Rise of Tiamat
Princes of the Apocalypse
2 issues of Dragon+
I'm not counting accessories like DM Screens or character sheets on either side. Neither am I counting online-only things - sure, Elemental Evil Player's Guide was great, and UA is OK, but there was
way more online support back in 2000, such as an adventure per month, plenty of flavorful articles about stuff, random maps, and so on.
So no, at this point there is significantly less game support than there was a year into 3e. At this point in 3e, we had not one, but
two settings (maybe three - I don't recall if the Diablo II stuff had any setting material in it), one significant rule expansion, numerous smaller adventures - some completely stand-alone, and some with the potential to string together, one mega-adventure, one monster book, plus lots of article and adventure support via the magazines.
Now, you might argue that this much stuff was bad for the game, and I probably wouldn't object too strenuously (particularly about the splatbooks). But claiming that there's more stuff available now than a year into 3e? No, that's just wrong. The 3e page count is probably 3-4 times that of 5e so far, and that's before counting the magazines.
If it's just available to people playing organized play (which is open to anyone who wants to join), it doesn't count as content?
Adventurer's League doesn't count, because it's not publicly available (plus, I'm certain Living Greyhawk offered comparable adventures back then). It's only available in certain stores or at public events (like conventions) - and Sweden doesn't have a single store that does Adventurer's League.