It's got a bunch of problems.
- some options have moved to menus which make no sense at all (e.g. all the toggles for whether a panel's menubar icon appear in the menu bar have moved off the panel for that feature and onto the Control Centre panel. But Control Centre doesn't have any options of its own, so the entire panel is a waste of time and has created a confusing UX where previously there was a sensible one
- loads of useful stuff I do all the time has moved a layer deeper. e.g. there used to be a top-level item called "sharing" for file/internet/printer sharing settings. It's moved one level deeper, below "General". Admittedly, "the average user" who doesn't use sharing features much, let alone wanting to toggle and control them, probably prefers this, but I find it annoying as heck
- following on from that, and also exhibited across the whole settings UI is that UI patterns are now inconsistent across panels; this seems to be because the whole thing is a bunch of web views, presumably all controlled by a different team. So they can create whatever UI they like, with whatever tools make sense. Before, I assume, there was more consistency because panels seemed to reuse the same default controls. I'm talking about use of tabs, or drop-downs, or expanders, or modal overlays... every top level panel has some of these, and they use them all differently: some panels expand a list to reach sub controls, some add a model, some just have piles of controls in lozenges
- it renders much slower. On my m3 and m4 MPBs you can still see lag. It's utterly insane that on these basically cutting edge processors with heaps of RAM, spare CPUs, >10 GPU cores, etc, the system control panel still lags
- they've fallen into the trap of making "features" be represented by horizontal bars with a button or toggle on the right edge. This pattern is found in Google's Material UI as well. It _kinda_ makes sense on a phone, and _almost_ makes sense on a tablet. But on a desktop where most windows could be any width, it introduces a bunch of readability errors. When the window's wide, it's very easy for the eye to lose the horizontal connection between a label and its toggle/button/etc. To get around this, Apple have locked the width of the Settings app... but also seems a bit weird.
- don't get me started on what "liquid glass" has done to the look & feel