Often actual "important people" are the ones who never want to be on their phones and/or go through their personal/executive assistant(s) anyways
Ms. Nuts and I are both extroverted social people. On board we often get phone numbers of fellow passengers so we can make plans to meet up later and since we're often not in the room, we cannot answer our room phone. Outside of the ship, we are in active group texts and it brings us joy to communicate with them. Occasionally, plans are made in these texts and if we're not active in that group text, plans made be made on a date range we have other plans. Cruising is a first world problem and so is being on your phone to make other plans but this is the life of an extrovert
Additionally, with work, seeing an email and taking care of a 5min task now can save me an hour of trying to determine if anyone took ownership of the the task, if was fully completed and if it was done correctly
Being connected/un-connected is very YMMV and I never understood why some shame those with opposing connection viewpoints. All I'm pointing out is there are examples where being connected for some (us included) is useful and can save time. If anyone wants to disconnect, that's fine, although I do think everyone should have a phone on them all the times even if it isn't connected to paid wifi as you can still use the X app and can take a picture or video if needed