Maxperson
Morkus from Orkus
Have you ever walked before? And I don't mean "to the shops" I mean an adventurer's paced hike. Because that's where your argument falls apart. It's not "I walk 5 feet" it's "I set out for the nearby village a couple of miles away."
Yes. I often walked miles to where I wanted to go when I was in my 20's. I had no car and the public transportation system in Los Angeles was(and still is) bupkis, so often a walk of a few miles would get to where I was going faster than waiting for a bus that came once an hour.
The short rest qualifies make it useless for hit dice use if you do anything more strenuous than eating and drinking. I suppose some small 5 foot slow walks to pick up the food are okay, but anything more than that disqualifies the short rest. ANY climb is going to be far more strenuous than barely moving in order to eat and drink.