I can confirn that Buddah is definitively one, if not the, best operator in KTM. However you can only do that much in that environment. This is not a "mountain" accident is is a 3rd world country accident. With an International airport located inside the capital city valley surrounded by high hills means lots of pollution, smog all year long fueled by ever increasing number of 2-stoke mopeds , very poor visibility , frequent power outages knocking down (sometimes ) the very few nav aids still working , no ILS ( not possible due to excessive glide slope and no money for MLS ), very particular procedures to avoid terrain, etc..
Another aspect is the lack of ground intrastrucure, meaning air transport is vital . Tourism is the first source of income, so tourist flights are also vital. all this leads to commercial pressure . Commercial pressure in a 3rd world environment is deadly. That explains most of the accidents in Nepal. No need to crucify the 2 guys ( or girls, yes, Buddah has female captains ) in front. It is part of the overall daily routine.
I feel sorry for them.