I really like ebooks, but I think he has some valid points. Right now you can just buy a book or pick one up at a library and the trouble involved is primarily the trip. Trade that off with an ebook for pdas that requires a computer and internet connection, and the pda, and a charged battery, and knowledge of what books will work with your reader software, possible requirement of an online purchase and/or site registration and password to keep track of, debugging the problem if it doesn't go smoothly, etc.
For a geek like me, all that tech part goes almost unnoticed, and so the whole thing seems convenient for me when I consider that I don't have to get in my car. But for a "normal person" it might be pretty intimidating compared to a trip in the car, or borrowing a book from a friend.
But the times will change and those tech parts will become easier and like second nature to the general public in time.