Something to understand here, it is exactly the same with the automotive industry. It is almost never about the actual safety, let me explain.
If you work as a safety engineer in a company like Boeing the name of the game is to not be responsible for the safety of a component at all. You always hide behind some kind of certifications then always ask a contractor to do it. The contractor might be scared too so will ask for a subcontractor and so on until someone is in an obscure juridiction or brave enough to just develop the software like almost anyone else but just with someone rubber-stamping the paperwork.
The safety engineer will have the paperwork so for them, it is safe! If there is an issue this is not them.
So for them Linux is absolutely out of the question, who wants to sign a paper for it?
Something to understand here, it is exactly the same with the automotive industry. It is almost never about the actual safety, let me explain.
If you work as a safety engineer in a company like Boeing the name of the game is to not be responsible for the safety of a component at all. You always hide behind some kind of certifications then always ask a contractor to do it. The contractor might be scared too so will ask for a subcontractor and so on until someone is in an obscure juridiction or brave enough to just develop the software like almost anyone else but just with someone rubber-stamping the paperwork.
The safety engineer will have the paperwork so for them, it is safe! If there is an issue this is not them.
So for them Linux is absolutely out of the question, who wants to sign a paper for it?