You know, he comes off as conceited, but if you know your gaming history, he listed pretty much the entire Western stable of game designers worth their salt, or at least the ones who have been active in the post-crash years. In fact, if you add Hideo Kojima to the list, you've pretty much got it for the entire world. I'm sure there's four or five others worth mentioning (maybe Suda 51 and Shigeru Miyamoto belong on there?), but it's a very, very short list.
Edit: Sid Meier deserves to be on there too. I think it would be generous to say there are 20 people in the industry on that level, though. And there are a /lot/ more than 20 game designers in the business. And I'm speaking AAA here. The indie market today is pretty much where the entire PC market was 20+ years ago, when these guys were getting famous. There's a lot of creativity coming from that angle, a lot of people focusing on game design because they have a cool idea, rather than because they like someone else's idea.