This is mostly like high fidelity audio equipment, or extreme coffee preparation. Waste of time for most people.

I used to play CS:Go at a pretty high level (MGE - LE depending on free time), putting me in the top 10%. Same with Overwatch.

Most of the time you're not dying in a clutch both pulling the trigger situation. You missed, they didn't, is what usually happens.

I never bothered with any of that stuff, it doesn't make a meaningful difference unless you're a top 1%.

But there's a huge number of people who play these games who THINK it does. The reason they're losing isn't because of 2ms command registrations, it's because they made a mistake and want to blame something else.

I'm sure that's true, but low latency can just plain feel good. I don't play FPSses at all, and I can totally understand how low latency helps the feeling of being in control. Chasing high refresh rates and low latency seems a lot more reasonable to me than chasing high resolution.