-
Because I agree with someone we know. ;)
The orgs allow input from FB randoms about "unsafe" roads that are added to banned lists, so why not allow full route sharing? Someone's great route might not be so great when others point out it's a truck route with no shoulder or has a "no bikes" section. Catching this early avoids riders having to re-route on the fly which can lead to more staring at GPS and not as much attention paid to the road.
You sound like someone I know ;)
I agree. And I actually think actively disallowing it is negligent.