This is True ~ Re-enacting CAN be Dangerous.
I Don't agree with building in additional ways to get hurt, instead of planning for a more universally attainable level of realism.
Hawkyns, sir ~ you are Extraordinary in your level of commitment and detail, and I mean No Disrespect. However, I too would like to play ~ safely. Trust is a difficult thing ~ intentions go wrong, and flesh is weak ~ what was meant to be no more than a "Martial Arts bruise" might dislocate my artificial hip.
There will always be those that have the ability to go above and beyond ~ and so they should. However, I think this idea was meant to be more inclusionary, for everyone.