> if I want to activate the flashlight on my iPhone, I have to know to swipe up from the bottom left-hand corner in order to bring up a control panel where the flashlight button exists.
The author even drives the point home by getting this wrong.
To get to the control panel it’s not a swipe up from the bottom left, it’s a swipe down from the top right.
And you don’t even need to do that. The flashlight and camera icons exist right on the Lock Screen for immediate use without having to bring up the control panel
It’s only the dangerously obsolete iPhones - iPhone 8 / 2016 and earlier - where you swipe from the bottom up. And from the bottom-anywhere straight up, no need to go from any corner. We’ve had 9 years of iPhones with the swipe-down action, and less than 2% of iPhones still in use are iPhone 8 and earlier.