Prolapse is much more likely to be caused by inactivity leading to a type of constipation, which allows the stool to remain in the bowel much longer than it otherwise would if the snake was moving around. As water is absorbed from the stool in the large bowel, the stool can become much drier and harder to pass, resulting in the bowel inverting far more than it would if the stool was a bit softer. If the anal sphincter closes before the bowel has retracted, you get a prolapse because the everted part of the bowel cannot return to it's normal place.
You've probably seen already that chondros are probably the laziest snakes in any collection, but the weird theories about prolapse keep coming - from stories that GTPs are poor drinkers so need water injected into prey (rubbish), to the hygiene thing. If the species was so incompetent as to not drink enough, or immune suppressed, GTPs would have died out long ago. In the wild their habitat is subject to wind, rain, fluctuating light & varying temperatures, so they would naturally move around a lot more to accommodate the changing local environment. In an enclosure, they are absolutely static - no wind, a bit of a misting occasionally, stable temperatures within a degree or so. Ultimately this is less than ideal because they find a good place and stay put - sometimes for months or even years. there are threads here constantly about how keepers put their snakes on the lawn and hey-presto, they poo. It's not because they're toilet trained, it's because the movement stimulates defecation.
I just like using natural branches because they at least give the animals a whiff of the wild, and if they become soiled, replace them with new, fresh ones. Easy...
Jamie