> but the only place I ever need to use a Qwerty keyboard these days is the touch keyboard on my phone.

Can't you just set your keyboard on your phone to Dvorak? If yours can't, I do know of a few third-party ones that can, at least on Android.

Not OP but I don't imagine that would be very useful. The input method is completely different, so the muscle memory is completely different. Switching from Qwerty to Dvorak on phone just means you have to re-learn touchscreen typing all over again as well.

Also while Dvorak is objectively better for physical keyboards, Qwerty is objectively better for swipe touchscreen keyboards, for similar reasons to why it was better for typewriters. The more space between common character pairs, the better swipe keyboards word prediction works.

Sure, and when I attach a bluetooth keyboard - which is about once every 5 years, at this rate - I do specify Dvorak.

Dvorak, as another commenter says, isn't as big a win for screen tapping. Dvorak does tend to alternate from one side to the other, but because the most common letters are on the home row, I'd expect it to encounter a lot of ambiguity in predictive swiping.