I can't think of anything else than some arcade games requiring the lowest possible latency. People are okay with 50 ping games so 2 ms really doesn't matter to most players.
If your network latency is 50ms, you still have extremely low, almost zero latency for most operations like using the mouse to change the look direction.
50ms display latency would make a modern FPS utterly unplayable.
Games like SSB are extremely latency dependent.
LEDs often have much higher latency than necessary. Many have ALLM modes which disable certain features to decrease latency. We already have changed LED technology for this reason -- higher end computer monitors specifically focus on latency now. It's a really big deal.
Nobody suggested this. {Parent} was merely pointing out one advantage of CRT tech over LCD tech in a specific use case.