I hate it because I can't change my colors now. I get a reddish brown on dark brown. I prefer white on black, which I've always had until Material You came along. I've researched how to turn it off, and it appears there's no way to do it on my model of phone.
I'd be fine with it, if I could disable it. It's the fact that it chooses your color scheme and you can't change it that is frustrating.
You have to have root, and I don't.