About the only point she makes that is valid is the one about reading "Green Eggs and Ham." While my 4 yr old LOVES the idea of me reading him a story off my Cybook, he really wants to see the pictures. Current ebook readers aren't quite there yet. For a small child, colourful pictures make a big difference, the PDA screen is too small for this and I'm not willing to read a book with my son from the laptop! Until we have a larger screen with colour pictures the youngest readers will be happiest with pbooks.
However, I know my son will be switching over to an ebook reader just as soon as he learns to read books without pictures! I will probably give him my Cybook and by the newest best one for myself at that point.