You cannot compare the cigarette tax to a study saying that even minimal alcohol consumption increases the risk of dementia. If you increase the price of wine 5x, I am sure fewer people would drink, but that's a very wild extrapolation, context-wise, of this conversation.

The same applies to abortion laws: not even in my wildest dreams would I compare their effects on abortion rates to the effects on behavior that the results of the study discussed in this thread would cause.