Actually I not so sure it does.
It makes the point that there are some that suffer from severe hoplophobia and perhaps some here will think that is funny, but to the ones with the paranoia it is very real.
Really though don't you think there is less and less of this extreme reaction as people become accustomed to honest, law abiding OCers.
I don't laugh at such people. I go out of my way to defuse their fears. I smile (a lot) nod pleasantly or engage them in small, pleasant chit-chat. After seeing me in or around several times, they frequently come up and ask me questions = a golden opportunity to educate in a friendly manner.
That an the OCer is the stereotype big bellied, white dude, wearing cowboy boots, with chin whiskers....Ok all that's all right, even the ball cap worn backwards which I despise.
The most egregious part of the depiction is his arms folded over his chest, indicating, as any student of psychology will tell you, a closed mind - not receptive.