I think the issue is most people have terrible monitors and have everything too bright all the time, so most people are happy with it.

I have a $900 monitor with deep blacks and a high contrast ratio, and I keep my brightness at a relatively low level. I have adjusted the gamma settings in the game. If I turn it up high enough to have good visibility then a lot of areas become much too bright and the overall color vibrance is lost as well.

With my brightness and gamma where they are at the bright areas of Siptah look fantastic. Everything is well lit and colors pop. But so much of Siptah is just poorly lit and the storm darkens everything as well. Bad lighting is a significant factor contributing to Siptah’s unplayability for me.