Who said he raised $600K to buy the aircraft. It may be a loaner...
In this age of entitlement and few values, I say well done to this young man. I'm sure he has a supportive family and lots of friends. I also noted he had secured many sponsors...
Climbing Mt Everest today can be as equally dangerous as in Edmund Hillary's day...in-spite of the update gear. Look at the folks that haven't come home from there lately.