> That phrase set was explicitly designed for text entry (typing) experiments.

I'm sure that set was designed for <del>typing on full-sized, physical keyboards,</del> not touch-screen mobile devices. (Thanks for the correction!)

Also, even though speech is faster than typing on a touch-screen mobile device, it's a lot easier to correct the errors that inevitably happen via typing.

Sometimes it's impossible to verbally correct errors or enter unrecognized words (or names!).