I've seen the animation repeatedly so maybe that's a glitch.
Quite possible, I’m on an old phone iPhone 12 mini, so it’s entirely possible that things aren’t working quite right. For instance, when I restarted the phone, it lost the wallpaper for some reason.
The point is you're aware of other options. You do the same actions you did before you updated: slide for another option. There is no problem here. You're sort of arguing to argue.
As for arguing to argue, I’m not the one who engaged here …
My point is considering someone who is unfamiliar with the iPhone, can they immediately point to an element and understand what it is. Yes playing with something they will get used to it but what is better? Something that is obvious with no mental friction or having something that adds just that little bit of mental friction?
This isn’t a deal breaker for me nor a casus belli. It’s just an example of an element of the UI that can be improved. For instance, if you do go to the end of the list the UI is better:
This tells you you've reached the end of the list on the right and the partially cutoff label hints at more to the left without making it look like a toggle. Of course this requires more space and the UI expands to accommodate it, but not that much more.
This is also better in that respect:
You can tell you are in a list with options to the left and right. I do get why they don't do that for the two "defaults". They want photo and video to both be clearly visible as those basic options are the two people will choose most often. But some indication that is there is a list visible at all times is, again, in my opinion, a better design. But I'm not professional app designer as some are on these forums who I'm sure can give their own more studied opinions on UI design than I.
Apple may feel that most people have gotten used to the iOS verbs that they don't need to do this, but I disagree. That kind of thinking is similar to, though not as bad as, the "everything is flat" extremism that stopped Apple from having clearly visible buttons (I will absolutely give credit here to iOS 26 for moving further away from that, that's an improvement). But I feel trying not hide things is generally better (no hard rules) or at least indicate that something is hidden (and not just when you open the app). In macOS I'm the guy who likes the scroll bar always on screen, though I admit the same is not true (were it an option) for the smaller screen and touch based UI of iOS. That's where I'm coming from.