Author here. Working as the founder mostly alone (or relying on part time freelancers) for a long time I do have control issues that could fuel FOMO.

However how is the "Unread message" status icon, the notifications and e-mails about pings that are sent by default (Yes, you can deactivate them) not an indicator that by default Slack wants you to look into the program as often as possible. Maybe I am using it wrong, but I don't want to fight the defaults of notification overload all the time.

For example on Linux you cant even disable the system tray icon, I wrote a blog post with a hack to do this a few month ago: https://beberlei.de/2017/07/29/hide_slack_unread_and_highlig...