Yeah, it's not simple! And it's hard to know if there's even a universal answer there. For example, with the person using DMs, is there another, deeper reason t

Yeah, it's not simple! And it's hard to know if there's even a universal answer there. For example, with the person using DMs, is there another, deeper reason that they are avoiding public channels? I would try to get to the root of that by asking the question (e.g., "I notice you don't tend to use public channels, but we have found that public channels are really important for the team to learn from one another; is there something we can do to make public channels more amenable to your style?") rather than assuming that it's an act of subterfuge and ordering by fiat accordingly -- but it's tricky! (And I'm sorry that that's not terribly helpful...)