And that's just safety. Knowing how to use the tool properly means using a featherboard, or not using both the miter gauge and fence, using a crosscut sled, and other things which ensure your piece won't be marred or jammed or bind or cut incorrectly. Proper use also leads to increased efficiency and less waste.
Same things apply to K8s. Even if you buy some managed product or safety feature, you still need to know how to use it right after that point, or your work will end up shoddy.
In many cases, safety features in languages do indeed remove the need to understand a dangerous tool. For instance, if your language doesn't have pointer arithmetic, you don't need to know how to use pointer arithmetic safely.
The rest of your points stand (though I suspect a saw particle colliding with your jaw is unlikely to cause damage as severe as cutting off your finger), but any responsible person will be wearing safety goggles when operating a table saw.
Like, if I've got a chunk of wood being hurled at my face at high speeds, I'm definitely going to prefer to be wearing safety goggles, but I can still imagine the wood coming in at an angle and knocking them away, or being hit with enough force to break the goggles.
Funny, just yesterday someone mentioned how Rust is compared to a SawStop: https://news.ycombinator.com/item?id=31784253
And here's a test showing how unlikely it is that it'll chop off your finger: https://youtu.be/SYLAi4jwXcs