Yes, that's generally how metaphors work, making a difficult concept easier for people to understand by explaining it in different terms with a hypothetical. I'm glad I could help you learn this.
and then get outrage from it?
Are you talking about the guy you're responding to? He doesn't seem very outraged, to me. Or do you mean the guy posting the screenshot on reddit -- you got "rage" from 'gun control in a nutshell' -- how, exactly? That doesn't sound like frothing at the mouth to me, that sounds like someone making a point.
It must be nice up there on your high horse, all educated and sober.
Seriously, you're absolutely right and I'm very surprised I wasn't called out for that sooner. I had several very stupid replies that were very funny to me after a bunch of whisky, and I thought this one was funnier than "No, what's it for?"