I agree, although i DID spend 5€ on wallpaper engine and i am very happy with it. (just know that our chinese friends are using the steam workshop for WPE to upload/download porn because most porn sites are great-firewalled lol, so take care regarding your filter settings)
I’m currently running 2 displays at 1080p (one HDMI, one DP) on a 3070TI. Idle TDP with just plain color is 37-40W, 2 different scenes with features like audio reactivity and mouse input @15FPS are 55-60W. They get paused automatically when a window is maximized (per display), the secondary display pauses additionally when i run a fullscreen/borderless window on the main display.
It is absolutely useless eye candy. I love it lol
ETA: They DO have over 15000 curated wallpapers, if you stick to that you can avoid the questionable content easily. if you look at it from this perspective, that’s worth the price of a small meal.