Well, maybe he said that by mistake or wasn't really paying attention to what he says
At least I hope so... I was counting so much on raids and the info with only one raid just kinda let me down
Don't get me wrong, Destiny will blow me away and I will spend with it hundreds of hours, but it would be nice to have something more to do in end-game, than just one raid
Here is the interview with Angry Joe if someone didn't saw it:
http://youtu.be/SQKp0VcA1Vw
I don't know what Bungie's plans are post-launch but MMOs usually launch with one raid dungeon and more are added over time. Maybe Bungie are doing the same?