> no one else seems to have any issues with most of this stuff

In my experience, 9 times out of 10 what this actually means is that they just don't know it's an issue! The type of person who would be confused by, say, the iOS control center, is not necessarily the type of person who would easily identify and raise the issue of it being difficult to do something on their device. They would just be mildly annoyed that they can't figure it out, or that the device "can't do it", and move on to find some other way. You may not realize it if you don't interact with those types of people but they fundamentally do not think like you or I do and what may be an obvious problem-solving process to you (e.g. identify a problem, figure out what tools are at your disposal and whether each could be helpful, check for functionality that could do what you are wanting, ask for help from others if you can't figure it out on your own, etc.) may actually not always be so obvious.

That's why the main way I find out people don't know how to do something is from them seeing me do it with my device and going "what!! I didn't know it could do that!!"