alt Hacker News>The pixel glow and deep blacks are just locked behind the glowing phosphor technology.
What deep blacks? CRTs didn't have them; "black" was really gray. You can see it yourself: go find an old CRT monitor, make sure it's powered off and you have a reasonable amount of ambient light for normal viewing conditions, and look at the screen. It's gray, not black. That's as black as the screen gets. Now try the same with any modern OLED screen; the off state is much darker.
In my room I have a Trinitron and a pair of 1440p OLED monitors. You're right in that in a lit room the OLEDs have deeper blacks, but in a dim room the glow of the Trinitron's lit phosphors create a unique effect contrasted with the unlit ones. I might have to experiment more with the various visual filtering softwares that exist, but I think the physical properties of a CRT mean what hits your eyes is just unreplicable.