In this specific discussion familiarity does seem relevant. I don't think shooting is so relevant, but printing and assembling are.

You don't have to be a life-long user to regulate heroin, but if you start legislating second-hand heroin smoke, people might look at you sideways. You kinda need to know a little even if you've never actually ever seen heroin. If you demonstrate severe ignorance, people are going to call you on it.