I'm a sucker for pros

Here's an excellent picture I didn't take, borrowed from a random blog.

Not a single one of these guys uses inline brake levers. But I love the damn things. What's the deal with that? Is there a clear disadvantage to them? Maybe this is like disc brakes, I couldn't think of a good reason not to use them on a cross bike except weight, and then someone said "wheel changes" to me. So does anyone know why all the good riders don't use inline brake levers? Maybe they go so fast, they can't take their hands off the hoods for stability reasons? I dunno.