It is, however, perfectly feasible to ask such questions on a team chatroom. "Who knows about [x]?" is usually enough to get the right person to talk to and it means the lead doesn't keep getting interrupted.
But seriously, I think the answer depends heavily on company and team size. The role I mention is a lot less critical for smaller teams or when there are minimal different stakeholders involved.
Are you literally saying that larger companies need managers for their dev teams because they're too enterprise to use slack?
FWIW I've used both in larger companies and smaller companies.
>But seriously, I think the answer depends heavily on company and team size.
I don't think it does. Slack chatrooms and email lists scale.
My point is that as an organization scales, you will have many teams, and teams of teams even. The wishful thinking is that you can disband this entire structure because 'we hire good communicators'.