I'm guessing that along with the tens of thousands of drivers who fly with smaller companies the world over, Vertical Freedom is most likely working with what he's got in terms of the oxygen kit and doing the best he can to make things happen as safely as posible in respect of pulling pax out of high altitude locations.
Hundreds of helicopter outfits the world over are isolated from the privileges of professionally regulated oversight, especially in developing nations, and in order to survive their drivers must simply do their best to make things work. Often its a case of choosing between the lesser of two evils. Historically, many countries (including North America and Europe) have been through this process.
However .. keep the comments coming, you never know, your concerns might just prick a pilot's conscience in the right way and result in averting a tragedy.