That is indeed a fun fact. One of those things I didn't realize, but immediately believe. Most of the gun owners I know have at least one or two antiques which predate modern notions like "safety" by quite a bit. They are fascinating technology, and they make for incredible family heirlooms.
To stay consistent with my point though, if we mandate that everyone must ID verify to access the internet, I think it's just as reasonable we mandate that all such antiques be forcibly modernized with some sort of 5G-connected ID scanner. For the children of course.