I always disable it. Having everything using the same exact colour palette is boring/homogenized. The themed icons are even worse, simultaneously killing iconography art and making it much more difficult to differentiate between apps in the app drawer quickly.
I set the color theme to as black and white as possible, then use the themed icons because it makes the phone less attractive to look at. Contemplating on setting grayscale mode on full time.
So yes, I don’t like it either.