I've realized lately that I'm actually entering this zone. For the last 20 years I've been talking about how stuff like this is a nightmare for the "aging" community.
20 years is a long time, and now I'm falling into it.
The big one for me in this new version of iOS was that:
1) I couldn't figure out how to move my cursor around. It used to be perfect. I held my finger down, it let me move the cursor around in a word. Now you have to swipe the cursor to "grab" it and move it around under your finger. It feels like change for the sake of change when it worked perfectly before.
2) And I can't do a "select all" anymore. I don't even know where that option is and I used it all the time. Something tells me I have to swipe somewhere now.
We all become the "aging" population no matter how much we think we know tech, design, etc.
I think my biggest problem with all of this is that things worked. I liked that things worked, and I liked that I knew how to use things. I cannot figure out why things have to change. Or at least, put an option in settings to change back/forth from previous functionality. When I wake up one morning with nothing to worry about except work, and find out I now have to relearn how to use the same phone that has been in my pocket for 2 years.... this is irritating.