Apple took advantage of the iPhone to rearrange some parts of the keyboard. Ross is taking advantage of the larger key size on the iPad to do the same and (as far as I can tell) to scale back from having to memorize three different keyboards (thats not including the non-standard-but-still-available Email, URL, etc keyboard).
And honestly? It sounds like you don't want to have to learn something new again. Which is fine. But it doesn't make Ross's keyboard bad in any way, like you're claiming.