Maybe I’m completely missing your point, or maybe you’re just being snarky/contrarian and don’t really have a point, but it sounds like you are basically saying (reusing the above analogy) “Why are we talking about adding seatbelts to cars when we already have helmets?”

I can promise you the latter is not the case. It's possible I misinterpreted your post. I am 100% for layers of preventative measures.