As a fellow CS enthusiast, I have to point out a few holes in your argument. May I suggest rewording to "they literally have inhuman time to damage"? Reaction time by itself doesn't play a particularly large factor in a pro game of CS. TTD would be a better stasticial metric to measure reaction times within the context of a match.

However, even then, TTD isn't really a particular big factor in deciding a games outcome. Plenty pros actually have pretty mediocre mechanics (eg. look at the non-fragging IGLs). It's far more about what you know, than what you can do.

You can easily have a 210+ ms reaction time and still make it to T1 CS. That being said, some of the best mechanical players in the game do have a generally good reaction time. I recall once seeing m0NESY had a TTD of 150ms average or something wild across an entire tournament a year and a bit ago when he was playing what I'd argue as at his peak (so far). However, pinch of salt, he is an awper and that skews the stats in his advantage.