[zipper]

First, many civilian pilots have had altitude chamber training.

An ambiguous claim, a safe statement by its ambiguity. 'Many' civilian pilots are prior military pilots, and all of them have had it, and have it around every 3 years during their military flying careers.

Most professional pilots are acutely aware of the effects of hypoxia, because it is constantly trained in initial and recurrent training for every aircraft and crew position change.

If that were true there would be no need for altitude chamber training, "mostly".

You're beginning to sound like a WH spokesperson, airline pilot version!

[Tzfat]

No major airline in the US does altitude chamber training. Why? It can't be the money. They literally spend hundreds of thousands of dollars to train an single airline pilot.

So, according to you, they must simply be idiots, not at all interested in safety.

For the record, human factors training, procedural training, and annual aviation physiology training get the highest priority at every major US airline. But what do they know?