This change seems arbitrary. In CS3, they could reverse this change and make the case that they improved the atmosphere, and people will agree with it.
https://cdn.cloudflare.steamstatic.com/apps/csgo/images/csgo...
https://cdn.cloudflare.steamstatic.com/apps/csgo/images/csgo...
(The former is CS2, the latter CSGO). In my office, with the sun streaming in through the double windows, with relatively low-gamma, lower-contrast old IPS monitors that don't suck but aren't 4k professional OLEDs, yeah, I absolutely want everything to be bright. It kills the horror-movie feel, where your eyes are at the edge of their abilities, squinting and peering into the foggy shadows for barely-perceptible hints of motion, but if you want to actually see what you're doing you want flattened dynamic range.
If you're not watching on an HDR monitor in a pitch-black home theater, you can't see anything in Batman (2022) or Game of Thrones, or any of the modern "realistic", "gritty," underexposed shows. It's definitely more artistically appealing in ideal conditions, but if you're not going to perfectly recreate the ideal viewing conditions (and crank up the gamma on your display to compensate a bit while you're at it), it's pointless.
I have the same complaint regarding dynamic range with regards to sound mixes, too. I understand that the real battlefield sends soldiers home with tinnitus because explosions are head-splittingly loud. I don't want that realism when I'm in-game, flashbangs should not be mixed in Counter-strike such that their own monitors and headsets/speakers physically incapacitate the players if they turn the volume up to be able to hear the radio commands. When listening to a movie, I usually just accept that I have to turn on subtitles (even though my hearing is fine) and will have to read the dialog if I don't want to wake up my kids with the house shaking when there's an on-screen explosion.
Some audio receivers feature some kind of "baby's asleep" mode that boosts the center channel & vocal-range frequencies while suppressing everything else. Folks who don't want the real Theatrical Experience (which I think is actually most home viewers) probably ought to just leave that mode on all the time.
An alternative for systems without that feature is to just manually boost the center channel.
To be honest, I strongly prefer the CS:GO image. It looks more interesting, with better contrast and a spookier feel to it. It even has details where the CS2 image doesn't, like the grating on the floor on the left side.
The CS:GO version reads more cinematic to me, while the CS2 seems cartoony/gamey even though they might have improved the geometry (I can't tell).
CS2 seems much better on this aspect than CS:GO.
Also to me the smoke looks weird. Maybe real smoke does behave that way, I don't know. But I don't get why it just hangs there like it's an inflated balloon. And I don't get why after moving the smoke with an explosion the smoke reappears magically in that spot.
It doesn't seem like they model air movement, at all, and I don't see how to get realistic smoke without some concept of wind.
I was about to write this.
I like the improvements, but I dislike that everything is brighter and with less contrast in the examples. The CS:GO environments look more characterful, almost like comparing The Matrix with a greenish tint to a hypothetical Matrix where everything was bright and clean.
I wish they could mix the improvements with the older lights/contrast.