I was thinking maybe he was too young to remember accurately what things were like in 1990 (I was 20 at the time). But then @molly0xfff wasn't even born then, and she's smart enough to know better.
In trying to find out Dixon's age, I found this Forbes interview where he says he's "been working full-time on the Internet really for 25 years as an entrepreneur and then investor" for whatever that's worth.