This is an interesting article, however, what does one do in a society that still provides access to real guns, and is not going to change that policy in the foreseeable future.
I have limits around gun play in my home, and also have the conversation about the harm that guns can cause, just like I allow my kids to wrestle and have limits around that type of play. I sometimes turn shooting games into shooting kisses or hugs then chase my boy with hugs and kisses. I sometimes fake a really dramatic death, and at the end of play talk about how sad it would actually be if I was actually dead. I have a general rule of no shooting, with fingers or toys, at people unless it’s an agreed upon plan.
However, I find allowing gun play in a school setting is very triggering for some students and observers. It’s seems similar to me as playing bomb squad in an airport. There is a consideration for those around you that should be taken into account. I prefer gun play to be a home or play date plan, if it is going to happen.