The issue that you are not seeing is that decompression happens much more quickly in small airplanes at high altitude rather than large planes at high altitude. ---There is plenty of reaction time in a large plane to get masks on and start down towards 15k.
Not seeing what?!! What you just wrote B1, that's friggin common sense. If I have a 5 gallon bucket and a 1 gallon bucket and punch a hole in them, of course the smaller bucket is going to be empty first. Duh. This point you keep circling back too has ZERO to do with this debate. And even if it did, the rate of decompression in your small airplane, would depend on the size of the hole. If a door falls off a Gulfstream, yeah its going to lose pressurization in seconds. An airplane 4X as big, at the same alt and all else equal, would take ~4X as long with the same size hole. Maybe 8 seconds vs. 2? Whatever. I fail to see your point. A smaller airplane has a smaller volume of air. This is a revelation???
Try using the whole quote B1, hypoxia is a function of whatever cabin altitude is at the the time. It doesn't matter if it's a 747 or a G-IV. When cabin pressure equals ambient pressure, you could be up there strapped to a weather balloon, it doesn't matter... the physiological effects are the exact same.
I already pointed out, this is what is categorized as "a highly improbable event".... FAA language, not mine.
AGAIN---> We already covered this. Do you need to read this a 3rd time? : "NOT SHOWN TO BE EXTREMELY IMPROBABLE"
And put this in your pipe and smoke it B1... Any (well maintained, or straight off the factory floor) aircraft that is certified with a pressurized cabin that enables it to legally fly above 15K, is no more likely to have a depressurization event than is a brand spanking new Boeing 7** or Airbus 3**. That's like saying a 2 door Hyundai loss leader has a better chance of accidental airbag deployment than an F-350 does. No. It doesn't.