I can believe it. For a physical keyboard, I would much prefer a layout with a DVORAK-like home row, but probably not for mobile. The imprecision of touch and swiping text entry likely do markedly worse when high frequency characters are on top of each other.
I believe software does that, in that characters are disambiguated in part based on previous characters, even without swipe typing. That means each character is mapped to a secondary keyboard layout where certain keys' "hitbox" are enlarged.
