I'm 1997. I've learned the cutoff for generations is major societal/cultural impacts, like whether one remembers 9/11 or not makes you a late millennial or early gen Z. I've met people within a year of my age who remember it and consider themselves millennials, while I have no recollection so I've always considered myself a gen Z.
Reclaimer by Shadow of Intent is one of my personal favorite examples of a well put together album, and that I love to listen through from beginning to end.
I should add I've had Nova Launcher for probably 10 years and (without having this issue before) changed nothing. I currently have an LG V60, and use IFTTT to periodically update my phones wallpaper to the top post in r/earthporn. Aside from that, I don't change my phones personalization settings and have never seen this happen before. I'm also currently running Android 13.
What is Material You? Afaik I have no themes installed, I don't personalize that far. All I have installed as far as personalization is Nova Launcher which I haven't changed anything for, for like 10 years.
There is no invert color option in the notification drawer that's specific to those apps. I do have the invert color option in there but have never used it and it's currently inactive.
That's... actually morbidly beautiful