I think one of the divides on people's takes with this is "gun users" vs "non gun users". I think all my gun-owning friends are on the same page, that it doesn't matter what the expectations are on a movie set with a full time paid armorer might be - gun safety is the same in every situation. If someone hands you a gun and says it's safe, you check to ensure they're correct. Every single time. When bullshitting with friends, if I go get a gun to show them, I will rack the slide or operate the bolt to show it's clear, then hand it to them, then they'll do the same thing. It's an automatic habit, like putting on a seatbelt when you get into a car.