Comment by 72deluxe
Yes, modern UIs are baffling. You're meant to know that groping around the screen and swiping at things does magical things, or to swipe from the edges of things for other actions. Combined with the industry's perpetual desire to change what these gestures do every couple of years, along with the constantly changing UI elements (buttons don't look like buttons, then they do, then they look like links, then they look like buttons for a bit, repeat), it is little wonder how older people struggle with new devices and software releases.
Back with Windows 3.11, it came with a paper thick manual telling you how to use the OS. You could read it, and understand it, and you only had to learn how to use the mouse (the difference between right-click and left-click, and how to double-click fast enough), and also knew that scrollbars looked like scrollbars at all times, buttons behaved a certain way at all times, and UI elements were visible and behaved the same at all times.
I think we've lost that with modern UIs and it's a shame.