That’s the other thing that most who use/abuse these statistics leave out. The linked report does cover that.
It seems like, to me, but you know, what do I know, that the logical step from “guns can be used for self-defense” to “but they are dangerous if not handled properly” is proper training and education. In all other similar issues, we legislate that. You have to be certified to drive a big truck fuel of flammable material, you have to show ID when buying Sudafed, you need a license to drive. I know the arguments against that when it comes to guns and I won’t repeat them.
I agree with NRA principles. We disagree that we should let people determine for themselves if they know gun safety.