When this feature is enabled, anonymous users will be assigned the "visitor" role.You can change their role to "participant" if you want to allow some of them to talk.
You can choose to enable or disable this feature for new chatrooms on the [channelconfiguration page](/peertube-plugin-livechat/documentation/user/streamers/channel).
This poll feature should not be considered as a reliable voting system.It is easy to cheat.There is no mechanism to prevent anonymous users to vote multiple times by just reloading the chat.Votes are never fully anonymous, someone having access to the server could see who voted for what choice.