Yes, and as others point out iOS has long supported Dvorak (and Colemak and a few others) where that desktop muscle memory matters: when using a hardware keyboa

Yes, and as others point out iOS has long supported Dvorak (and Colemak and a few others) where that desktop muscle memory matters: when using a hardware keyboard via Bluetooth. Qwerty is useful for "swipe typing" on a touch screen and Dvorak/Colemak is great for touch typing on hardware and the way "muscle memory" works those are such different media/muscle movements that they have separate "muscle memory".