I see two different things at work here:
1. The intent of the quote is pretty much to skip over boring stuff instead of spending hours on it. The context makes this even more clear.
2. However, when WotC took over D&D, someone decided that the writers didn't need to confuse the players with options. It is a clear editorial decision even in the 3E DMG (which is, however, still better than what came later in this regard).
We really don't need game texts written to an 8th grade level, like newspapers, in the fear that discussing a few options of how you can do something, and why, will totally paralyze the poor player. I'm sure, as with 3E Attacks of Opportunities, it will so paralyze occasionally.
It was particularly glaring in the 4E DMG, when they went to the trouble to talk about different playstyles, but then refused to provide much information on how to support those different playstyles with options.
(And no, it doesn't need to be written in High Gygaxian, either. There is a middle ground betwen High Gygaxian and a Reuters news feed.)