What would you learn?

You should always be prepared to encounter unrestrained nature when backpacking in a national park.

It's a bit like saying weather forecasts are useless in Seattle as you should always be prepared for the rain.

I’m somewhat experienced in wilderness backpacking, and I always look into bear protocol anywhere I visit (including talking to the rangers there in person). But it’s disingenuous to suggest that you’d learn nothing from death statistics. Are you suggesting that there’s no need to know that, because if the numbers were too high in an area they’d close it down?