I would be more inclined to see difficulties and dismiss if the problematic system was new cutting edge stuff. But come on guys, this is the oxygen system for the pilot!!!!!! How many years have we made O2 systems for aircraft crew???
In reality the oxygen system is quite sophisticated. It requires energy and air from the engine bleed to eventually be converted to oxygen. There are no oxygen tanks for the primary ventilation system. It is the complexity of this system, especially in cold weather, that is believed to be the source of hypoxia and a strong candidate as the primary cause of the one Raptor crash to date.
The OBOGS technology was first introduced in combat aircraft in the late 1970s and early 1980s, replacing a requirement to store liquid oxygen tanks in aircraft.
They always come up with new spiffy stuff that does not work.
I understand with the electronics, but when it is the AC or O2, why they do not keep the old stuff, I wonder. THis is a glimpse of how the government would keep “climate change” tuned up for us.
With new, different engines come new, different air bleeding systems and new, different computer and control systems. With not nearly as well-established known failure/replacement rates.