There were some less-than-stellar reactions in media and politics, west mostly ignored Tenzing, in India Ed was ignored completely. You are right, they both needed each other and I think after coming down they knew pretty well how much luck they had to just survive this (ie climbing Hillary steps barely 100m below summit, must have been extreme... now there are permanent ladders installed by Chinese expedition, often a choke point where people get frostbites from long waiting to pass up or down)
What makes you think that? Many Sherpas climbed Mt. Everest without supplemental oxygen because of their genetic uniqueness. In fact, one did it even 10 (ten!) times without bottled oxygen. Lot of other Sherpas can do the same.
https://omgnepal.com/ang-rita-sherpa-climbed-everest-10-time...