I think it's a step in the direction of personal freedom, because addictive substances are kinda the opposite of free will.
Not all freedoms are the same. Losing one doesn't equate with losing all of them. Equating the freedom to become addicted (or indebted perpetually) is not the same as the freedom to read or travel, etc.
Data. Decades of data and the societal costs of ignoring addictive substances. The rest of your comment is a set of false equivalencies.