I'm always mistyping and I don't know how to fix it to do what they want.
Fingernails won't trigger a touchscreen. They do matter, though - as your fingernails get longer, you're forced to tap the phone with the side of your fingertip (so the nail doesn't block you) instead of the front.
Then I watched Tim Cook have trouble with tapping the screen multiple times for one action at one of the older WWDCs pre-COVID.
I felt validated and exasperated. Does Tim just put up with this?
She has only been complaining since iOS 26, though.