On resiliency, most people cycle tour with disk brakes. This is primarily because the additional weight of the luggage adds inertia to a downhill scenario necessitating a larger braking surface and better torque control. Whether using vee or disk brakes, you still get redundancy (two wheels means two brakes with two separate control systems) and any experienced cyclist is familiar with compensating for the loss or relative efficiency of two brakes in a failed, fouled or poorly tuned state. Occasionally adjusting a brake is not a big issue, nor is changing a brake pad. Packing a spare set of contact pads is normal in touring.

Few cycle tourists seem to optimize for using navigation tools or holding cameras while riding. Oldschool Europeans used to mount maps on their handlebar bags, but I haven't seen that in yonks. It might be common on a short-hop or produced-for-youtube thing, but to my mind it's not really the same mental space as touring, which anyone who has done it would understand: long distances, often daily goals or pre-nav, strong engagement with topographic change and natural environment = ~no need for while-riding lookups. Sure, if the road is well-surfaced and there's nobody on it, or it's a phone-photographed quickie: go for it. But unless it's a fleeting moment, most people I know would stop, have a drink, perform any lookups, maybe take a photo, then set off again. F=ma. Luggage means you have relatively large m. Fiddling with your camera while riding can be a bad idea.