I think the point is to completely go cold turkey with the tool they know is good and tackle the problem with something they are unfamiliar with, disrupting exi

I think the point is to completely go cold turkey with the tool they know is good and tackle the problem with something they are unfamiliar with, disrupting existing habits. It sounds like they reached the point where modifying Slack (or more importantly, their communication habits) would just result in sliding back to the old ways.