Who gives a **** about 1 engineer, there could be even 100 engineers, the extent of testing is strictly determined and controlled by the certification agency.
Nice attitude. The report states that the certification process was flawed. This Engineer knew it, WAS ULTIMATELY PROVED CORRECT, but was a hinderance and so he was sacked. Gives him a pretty strong case I'd have thought.
As for the oxygen thing, I thought the cells generated their own during runaway so it's a mute point - still the battery is self destructing inside a nice box so it's ok.....