So? Many others can't. Just the other day I called up a friend to see if he had received a work related email. He had to hang up and check. I can do both, he can't. There is a difference. Now, as per the ad, well poorly executed on AT&T's part.
Although, the general idea is nice, the ad itself sucks.
Email is push to your phone, my email comes to me while I'm on the phone frequently.