Has the interface changed? The icons look different, but ever facet of mac and iPhone and iPad is the same. If someone was in a coma for 15 years, they could figure out any Apple device instantly. If anything, I think they'd be shocked at how little has changed. FaceId is new...beyond that?...it's all the same. UX is largely a solved problem. There hasn't been a meaningful change in decades. Nothing about interfaces today is any better than it was 15 years ago. So really, I have no fucking clue what you're talking about.
If anything, Apple has always had pretty mediocre UX. If you think it's good?...try the non-MS alternatives. I've used most of the Linux Desktop variants, Apple, MS, Android, various other devices, like consoles and media players....I've NEVER been impressed with anything Apple put out, software-wise. If anything, they reduce functionality to make things look prettier and I have to guess how to do things. It's usually more obvious on Linux.
Look at XCode. Have you ever heard anyone praise it? I haven't...I'm a fucking professional software engineer. No one uses it unless they have to. I tried using it...it was awful...slow, weird, buggy. I COULD use it for work, but no one does. I don't see IntelliJ or VSCode emulating them and those are the leaders, by far. It is not a well designed product and is not very popular.
Reminders is my most used app. I can make it work, but it does suck. It lacks a LOT of basic features any commercial app would have. I have learned to just adapt to Apple's bad UX design and lack of functionality for the sake of not forcing my family to install new programs just so we can plan things, like trips, together.
Look at Apple Music?...you'd think they'd get that one right, but holy shit did they fuck that up royally. They were probably the newest entry to a crowded field and somehow made the single worst, most unusable product in their entire catalog...and they historically had many ties to many famous musicians...music is kinda their thing.
However, Cook really kept the UX of the past and just added features in a consistent manner. Since I started using Apple products, no software got worse and everything is a lateral move or slightly improved. Additionally, when I started, crashes were routine....now I can't remember the last time I had to restart an app to work correctly or had it crash on me.
You're welcome to be hipster and tell me how much you liked Apple before they were cool...but yeah...I'll stand by my defense of Cook over Jobs any day. I found Jobs and ESPECIALLY Ive to be greatly overhyped. I've never been impressed with Jobs and Ive has consistently horrified me. I am sure if I knew more about Jobs, I'd gain some respect for him...but Software UX? No...Apple's software is usually less usable than their competitors IMHO.