The update to Android 15 was TERRIBLE. I updated it the past days, it's literally a bootleg copy of iOS interface. I despise it so much, much more than the move from Material Design to Material You. Everything occupies so much space, there is less information available for you, and important things like changing the music in your lock screen is confined to a tiny space.
At least they got the Expressive right in the name now, Material Expressive (HATE).
Every update is worse than the last. I did the same, and I'm particularly loving turning bluetooth on or off requiring a swipe and three button presses instead of one. And I thought the quick settings regressed in 14 when they went from icons to huge buttons, but now they've gone for less-huge buttons with always-truncated text in.
At least with Windows it alternately gets much worse then a bit better again with each version.
Regarding the monstrosity in the link, yes it does make me 'feel things' - things I will refrain from typing out lest they be construed as threatening behaviour.
You can say a lot about Android 15, but I have a Pixel and an iPhone 16 Pro and they do not look alike... at all? Pull down the notifications and quick settings, it does not look remotely like iOS. The same for all the native apps.
I wonder if you have Samsung One UI 7 or some other skin. One UI 7 looks a lot more like iOS, but there is little Google can do about that?