I suppose if we wanted to admit to having reached the point of tiredness just from riding a bike, the argument could be made that as the ride duration increases (and as the pedaling intensity thus decreases), that a more rearward saddle position would take weight off of one's arms.
It's an argument I've put forward myself!

But I've ridden a good many bikes where the saddle being moved forward seemed to cure a challenged fit, which was so much easier than messing with stem length and which made the bike more spirited and more fun to ride.

On this bike, I went too far. I used the bike for a 68 mile ride where the last 25 miles was tilted downhill, which left my arms in agony for the last half-hour. It should be obvius from the photo that this very steep-angled bike was a very poor fit for me from the get-go, but that didn't stop me from trying, and I did take on the steep Iowa Hill climb without stopping during the mile 25 to mile 30 section of the ride. The frame angles are so steep that the stem is seen to point down, and I did also shorten the stem from 120 to 100mm to make it ridable.