One of our VP (which does 0 production related work & has nothing to do with our team's work) suddenly joined Slack and subscribed to several of our Slack channels without saying anything before hand. We noticed the XXX has joined #channel message on one channel and found out he also subscribed to several others channels in the past 24 hours including the casual fun random one. We are not sure if it is really him since his username is not fully explicit and Slack does not allow (for what I know) to check users Active directory accounts. He subscribed to some others teams' slack too.
Our slack is not configured 'invite only', we filter by domain. It's open. Members join channels at will when they need, when they join the team, a new project, etc. The company corporate culture is relaxed, there is a very low managers/employees ratio and geeky.
Among our teammates we all feel quite annoyed by this behaviour. We feel it as an intrusion, unannounced, silent and unexplained. Even if we think there is no spying purpose, it feels rude.
What should we do ? Are we little snowflakes for feeling that way ?