As someone who installed a bunch of Ubiqiti equipment at a large church, I can see that once we have 1000 phones in the building, there's a non-trivial baseline

As someone who installed a bunch of Ubiqiti equipment at a large church, I can see that once we have 1000 phones in the building, there's a non-trivial baseline of network activity that I attribute to Facebook, et. al., phoning home. In my company of 46K employees, it can't be a non-zero cost to have this telemetry activity leaching on our WAN connections, many of which are struggling to keep up with demand already.