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I can understand it in games,it was the first trick for hiding a bad 3D engine, make everything dark, but it is not necessary anymore.It's become necessary in movies and series as well, because stuff is mostly CGI now.
Look at Star Trek in the golden era (TNG-ENT) vs. what it is now. Despite aging props, the former looks real (if cheesy; color choices in early TNG didn't age well). Federation ships are solid, clean, and brightly lit. That's because they were real, physical sets. Discovery/Picard? It's all dark, and while it may also be a stylistic choice, the fact is that if they lightened it up, all the CGI sets and blinkies would stand out like sore thumbs.
On a related note: I can close my eyes and imagine myself walking around the bridge of Enterprise-D, touching the panels, sitting in the captain's chair. I can almost feel the texture of the chairs, the friction of the carpet, the glassiness of the panels. Can't do that with Discovery. When I close my eyes, I just see non-solid holograms. I can't imagine what would it be like to touch them.
Physically based rendering, as awesome as it is, still seems to subtly fail in reproducing various kinds of materials. Between various games (including AAA productions) and movies I've seen over the years, I haven't encountered one where a CGI piece of metal actually looked like a piece of metal upon closer inspection. Everything looks like make-believe plastic.