Well, there is a lot of truth in that quote.
Personally, I don't think you can sell DW like you would sell a regular game anyway. DW is a hobby. It's a build-your-own-space-opera kit. I could play with this for as long as a kid could play with Lego blocks. While I firmly believe that Steam would vastly increase the number of people that play this game, I am not convinced that they would understand initially what they were buying. This is something that is best enjoyed with LOTS of free time and a very open mind. Much more so than, say, the latest $5 Indie title on steam (which might be fantastic, but won't entertain me for years).
Conclusion? DW (and all the really good games that matrix sells, like Panzer Corps) are games that tackle entertainment from the hobbyists mindset. It takes some love. If putting them on steam would cheapen the game in the end by allowing less flexibility than before, then I suppose staying off Steam is a good idea. For DW. For most other indie games that aren't on this kind of scale, it is a fantastic launching point for a developer.
< Message edited by Gelatinous Cube -- 12/9/2011 3:34:42 PM >