Personally it's the running but I find crazy, but to each their own.
Seems like he knows the terrain, the gear and his own limits well, which is half the battle.
One bit - handling the freezing water - did make me question his relevant skills/experience for the situation though:
Surely he must have been in a similar situation before, yet despite a "long rumination" he basically does nothing about the problem.
He could avoid the bottle freezing altogether by filling it with hot water, then puting it in the sleeping bag. Now I'm not sure if the platypus can hold hot water, and he might not have the fuel to justify it. But had he filled the pot with water before going to sleep, then he wouldn't have had to rely on a 'lucky thimbleful water' to start the thawing, he could just start melting the water in the pot, and it would undoubtedly save fuel compared to what he did.
I don't think it's a big deal, he could find water again in the morning. But it did somewhat tarnish the impression of him as a person with the relevant experience and skills to push his limits in freezing conditions on a mountain.