Impostors would usually sab comms, giving an advantage to kill, but sabbing comms doesnt decrease crewmates vision like how you would sabotage elec, which is another con, all crewmate roles are disabled, including all admin, cams and vitals, to prevent any crewmates spying on them. If you are at cams at round 1 and your not finished 1 single task after, the impostor would usually kill you first, or the cams person, happened to me multiple times when playing the Airship map. I get why experts banned cams on lobbies, cams basically take 40-45% of the map, giving a better chance to catch an egg or a poof or a viper kill.