This attitude is common, almost an industry standard IMO. Common and standard in a hell of a lot of industries too. With something as tightly regulated as air

This attitude is common, almost an industry standard IMO. Common and standard in a hell of a lot of industries too. With something as tightly regulated as air travel, or pharma, or finance, you simply do not add features that are not required unless it provides some measurable competitive benefit. Everything feature or bit of equipment you add becomes something else you have to check, maintain, regulate, replace. You don't do that just because it's a good idea, but because you have to or it makes you more money. Neither of things apply in a situation that arises once in a lifetime, unfortunately.