My point is that if I do cookie manipulation it's very hard for them to check if I'm in good or bad faith, so they will end up implementing something unpredicta

My point is that if I do cookie manipulation it's very hard for them to check if I'm in good or bad faith, so they will end up implementing something unpredictable (and will not give you any hints the same way you don't get any hint where you are banned from a social network).