The severity of wounds was very different even just a hundred years ago. It was dramatically different more than some 5000 years ago.
These days mortality is heavily based on infant mortality, but 10,000 years back the statistics might be a bit different. I'm sure infant mortality was still a significant factor, but I'd also expect modern medicine elevated its significance a lot.
Sure, but that changes the average too, not the maximum
When I say maximum, I mean that presumably 10,000 years ago, there were people who didn't get sick, didn't get wounded, etc. They died of "old age"
How long did they live?
There were far fewer of them, but they existed, and were probably productive, passed on knowledge, and moved civilization forward. They could have been leaders, or raised leaders, etc.
https://en.wikipedia.org/wiki/History_of_wound_care