Percentages

Different conclusions can be drawn, even those unrelated to the question itself. I doubt your conclusions will drastically affect how you create sets. And players have expressed their opinions many times, so there was little point in the poll.
It depends on the question itself. It's one thing to discuss the emergence of a psychological "mafia," open roles, and other large-scale details of the game, and another to conduct polls where the results are already known and will not change anything. Some will continue to play passively, signing up for almost every game. Some will continue to make mistakes in every game, and even one-time protections won't help them play better. Some people simply don't care what game it is; they will sign up anyway.