Where do you draw the line where you have to treat an inert object as a firearms and where you don't?
Great question. I would guess that folks draw that line at varying points along the spectrum (real gun on one end, 'finger gun' on the other ).
Here are some examples that explain my own personal line:
Real guns - treated like real guns - because they are real guns
Sims/Airsoft guns - treated like real guns - because they fire projectiles and are used as direct replacements for real guns in training
Blue guns - treated like real guns - because they are used as direct replacements for real guns in training
Coat hanger being used by Awerbuck - treated like a real gun - because it's being used as a direct replacement for a real gun in training
Nerf guns - treated like toys - because they are a vast departure from real guns in shape, size, function, and use
Rubber band guns - treated like toys - because they are a vast departure from real guns in shape, size, function, and use
Coat hanger being used by my 6-year-old - treated like a toy - because we are probably running around the house having a fake war and crawling around the living room having fun
And of course there are some exceptions that I've noted in previous posts. If an instructor wants to use an inert replica or piece of scrap wood to demonstrate something that would otherwise violate a safety rule I'm ok with that. I'd be less thrilled if students were using them to replicate the mistakes themselves.