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Strangely enough, one of the RPi2s I bought last week was DOA (wouldn't boot off a card that worked on an identical Pi2; red/green LEDs just stayed solid).. So, how convenient!
Yes. The full recommendation reads "This time round, we’re recommending a 2.5A adapter if you want to connect power-hungry USB devices to the Raspberry Pi."
So I guess the assumption is the average person won't connect power-hungry USB devices to their Pi 3.