Quite a lot of pros use MX Blues for playing Star Craft 2 and MOBAs because the tactile nature clickiness gives your brain a check mark on whether you have pressed the button without having to bottom out. Very light switches can cause erroneous inputs, which is a very annoying when typing now imagine if you used an ultimate ability or accidentally commanded your zerglings to halt in the middle of a fight.
I think it is whatever the individual is accustomed to. Some Korean Star Craft 2 pros use MX Clears in competition too which one would think is crazy considering the APM required however you get a definite tactile feel for successfully getting past the 65cn to actuate.