Of course it does.
Making anything illegal actually promotes the illicit sale and use of whatever it is you are making illegal.
That is not the same as increasing the incidence of the illegal act.
Again, your logic fails you due to your leftist cognitive dissonance.
So some of you people think I'm a leftist and some of you think I'm a right wingnut
And when you make something illegal you do increase the incidences of illegal acts because every act associated with that thing is illegal
Black markets exist because we arbitrarily make all kinds of things illegal.
Look what happened during prohibition. Look at what's happening in the illegal drug trades and yes look what's happening in human trafficking.
The only reason these illicit markets exist is because there is money in the trade of all things illegal
You're a leftist. You probably pretend to be libertarian, if you're American at all.
Born and raised in the USA
So I'm a leftist who wants to get rid of social security, who is in favor of strong borders, who is very pro second amendment etc
What I have that you don't is an understanding of human behavior.
Make something illegal and people will want to try it.
Make something illegal and criminals will find a way to make money on it
Make something illegal and the incidences of violence increase because of the illicit trade
Whereas legalizing the same activity or item decreases the violence because the black market dries up.