they're not gifs
This is about as silly as getting mad at a game's HP mechanic, enabling godmode, and then complaining that you have to type the command every time you launch the game
The light/darkness mechanic has been explained an inappropriate number of times in the thread by the thread's OG ninjas (a couple pages above your post even) - it's one of the main appeals/kinks for a large part of this project's audience. If you don't like it or don't get it, then this simply isn't for you. It won't be removed or changed to a toggle, or at least I won't be rushing to implement one, because the mechanic is crucial and intentional.
I animate it the way I do because I can and because it's part of the project's style. You can still see everything if you want - it's dimmed, not pitch black.
The other points about grinding, routes, items, and interactions are noted. Most of these (obviously) are planned for future updates.
1 star review or not, the design choices won't change for the sake of one opinion - particularly when it comes with passive aggressiveness and demands for my attention.