What’s the point of Slack if you have to limit the teams you belong to?

That in itself says Slack has a problem.

Every team on the planet is jumping into Slack. It’s getting so if you need to be involved in discussion on a topic, you have to go to Slack.

Truth is, Slack has what you’d call a “happy problem”. I think at the start they only envisioned people being on one or two teams. But with its exponetial growth, it isn’t working out like that. Now they need to work out how people can efficiently manage many teams in Slack. A “happy problem”.