s/viewer list -> chatter list
Chat bots do not impact viewer count in any way.
Bots are supposed to be using justinfan accounts if they are just gathering data, to prevent complaints like this post, and while I personally don’t understand being upset at having a bot idle in your channel, I respect twitch admin decisions to use a justinfan account so that they can lurk invisibly instead.
Something to understand: Theoretically you are never alone in any chat. It’s a public website that supports anonymous login.