[hspak]

It sounds like a signal to noise ratio problem. The problem is that there wasn't a sound way to filter noise (multiple channels failed) so they were forced to deal with all the noise to make sure they didn't miss anything relevant.

The constant policing they mention at the end was probably enough overhead for them to consider alternatives, though I don't understand what they mean with this quote: "Furthermore, Slack was not designed for the deep, meaningful conversations that are needed to move 1Password forward."

On the surface, it sounds like a people/culture problem, but I'm sure there were other factors at AgileBits that contributed.