The quotation is right, but the effective transformation of 1080i to 1080p requires, first, a 1080p display and, second, a 1080p display with adequate reverse 2:3 pulldown. If the second condition isn't met, the display will be subject to judder, twitter, and jaggies, which presumably wouldn't occur if the DVD player were responsible for delivering 1080p. The best scenario occurs when the source outputs 1080p/24fps, and the display is able to accept it w/o conversion to 30 or 60 fps. But it's not a deal breaker w/o it.