Fat people rarely are found climbing mountains, especially difficult climbs like Everest. This individual was probably tall and weighed in excess 200 lbs.
If his arms and legs were frozen to the elbows and knees, it seems like they could have "made him smaller".
I realize the logic of your reply is compelling. That would not stop, however, someone 'fat' making an illogical attempt on Everest.
double amputees and blind people dont usually do it either, but its been done. why not fat?