We have around 6k channels for our 1500 employees. I have around 60 I'm in that I need to pay some level of attention to or that I'll get Facebook defriend shamed for leaving. Conversations happen instantly and at odd hours and decisions are made and then scrolled past. Each team I work with has at least 3 channels, public, private, oncall/cr. Often an additional one per micro service. It's a mess.