That's why I said from a users point of view. I disagree about less data, an unclear layout can mean more data as it can take longer to find an answer. I think your right that apple ppc machines usage can only go down. But ppc may not have peaked yet. Though are at or near that peak (i'm guestimating here) as the spec required to run osx goes up so does linux usage on ppc.
I am concerend that this is just another step to distancing ubuntu from ppc.