Argh. Editing text with a touchscreen keyboard is still a huge pain.
Typing new text has gotten a lot better over time (even as auto-correct, auto-complete & predictive text have introduced entirely new and fascinating classes of typos!), but trying to position the cursor with a fingertip tap, select exactly the right span of text that you want to replace or format or link, etc. is still SO. DAMN. CLUNKY.
Mouse-click. Shift+arrow keys. So much easier.