Maybe some people do. I don't. My group doesn't. Here's the bottom line- if you are buried in avalanche (not just caught in one, but buried) you have a 50% chance of dying right there. Even if you have a beacon on. Even if you partners are trained.
Every minute of burial, your life expectancy dips significantly, and past 15 minutes it gets ugly.
A burial beyond 6 feet is nearly always fatal because you can't be dug out in time.
I could continue quoting statistics but the bottom line is that my goal is to avoid getting into an avalanche to begin with no matter what my gear and no matter my training or my riding partners' training. To me, a beacon is primarily a body recovery tool. Can it save lives? Yes. And I guarantee I would not stop searching for someone buried until I found them and dug them out, regardless of what the statistics say and I would have the urgency of believing they were alive until proven otherwise. But the sobering facts are that avalanches are just flat deadly and the best course of action is not to get in them. And is upon that basis that I make my route planning decisions. An avy bag is on my list of things to get, but it won't make me more reckless. Avy's can happen so suddenly that I don't know for sure I'd be able to deploy it, and you can never rule out mechanical failure either. It's another tool, but not one I'm willing to take risks with my life because I have it on.
I also carry a survival kit that would allow me to spend the night if necessary. And I carry a med kit that would assist in the event we had a major bleed or broken bone or other injury. Neither of those two pieces of kit change how I ride either. We still leave in plenty of time before dark, we still turn around if weather turns inclement. We still avoid doing stupid things that will get us injured. The kit remain last resorts, just like my avy gear, and the way that I ride odds are any of my gear is more likely to be used helping a member of another group than my group.
But I'll admit there is one major difference and that is that I am a woman. I do believe firmly that the way men handle risk and the way women handle risk is inherently different and your examples might well apply to men. I'm interested in hearing what men have to say in response to your examples. Is it really the gear that makes people less cautious? Or are we somehow failing in how we train people?