It turned out people hated that, but it was an unusually amiable group of experts who maybe were reluctant to speak candidly with this person (and the reporting lines weren't clear, in a firm of technical experts). Anyway, I only mentioned this anecdote because I was reminded of it, as a concrete example of disruptive notifications you had to be plugged into, for whatever reason.
Pardon the naivete, but couldn't he just stop doing that?