I remember when those were considered cool at the time and i modded my PC case to replace the dull green LED with a bright blue one.
It lasted for only a few days before i added some tape in front of it (and it lasted so long because i was trying to convince myself it wasn’t annoying) :-P
I think it has to do with the feature not working as seamlessly with controllers - or at least developers believing so anyway. The original Xbox port of Doom 3 had the camera zoom in to a panel where you were near it and IIRC the BFG edition has the controller slow down a bit in some panels.
There are a couple of FPS games that had similar in-game UIs, though they aren’t as big profile as Doom 3. I bought Exodus from the Earth some time recently and the game has a lot of in-game UIs that use a similar seamless control.
The original Cube is also fun, at least as a singleplayer game and comes with a lot of SP maps. The SPMP (or MPSP, i don’t remember :-P) mode also allows playing the MP maps with randomly spawned bots.
The AssaultCube fork adds more realistic environments (relatively to the original game anyway), though it is fully MP oriented. But you can still play with bots.
AFAIK Spez is kinda special in that he is one of the creators of Reddit, being there since the very beginning (i think he made the first or second message), so i think unless the rest of the company kicks him out he isn’t going anywhere.