Yeah, I mean even for short day hikes I leave a pretty detailed GOTWA (where GOING, OTHERS going with me, TIME i will be back, WHAT to do if i don't come back on time, ACTIONS i will most likely take if i am stuck)with my family but I don't fret much over my partners(s) gear.

If its a day hike on an established trail, we might gab on what we brought while were going out but as long as we each have water, food and a couple other items big deal.

If its a multi-day trip, there is generally a zero day before hitting the trail where we all split up gear and help each other decrease pack weight, but I don't need to know where he puts it all.

That is very much a throwback to the military mentality of if you make contact and need to grab a ruck and go, you know where everything is at without looking. It also is a tool by Drill Instructors and Plt Sgt to standardize equipment.