On top of that, it's one way. Ya gotta wait your turn in both directions.
Even with the Sherpas,ladders and fixed line, still lots and lots of hard humping!
Put on a pack with twenty five pounds or more personal junk, the full extreme cold kit and ascend (jug) a few pitches!
Have heard that the Hillary Step is about a 5.8, a walk up!
But you are wearing crampons, heavy gloves...
IIRC Nat Geo sponsored an expedition using 1920’s clothes and equipment.
The Wildest Dream: Conquest of Everest ????
Also a documentary about making the hobnailed boots, wool clothing...