MASTERMIND: those are 2 differing issues ... people look at other peoples games when they try to find a system in their moves .. probably to find a weakness when playing against them, or to learn from them when they think those players are good players

people dont like cloak mode because they are a bit paranoid and want to know what other people are doing .. they want to see if they arent being watched themselves, etc. ... and some people dont like cloak mode because they cant see if their opponents are online playing games at that moment or doing something else (like reading boards, managing their fellowships, etc.) so they know if they have to stay around a bit longer in case their opponent makes a move in their games