In terms of Zvi’s 4 levels of legality, I think that your reasoning is a valid argument against crossing the line between 2 and 3. However, I don’t think that it’s a valid argument against what Zvi is actually proposing, which is going from 1 to 2. If we have an obligation to help people who have APD, then the most cost-effective/highest-utility solution might involve making gambling less convenient for the general population.
In terms of Zvi’s 4 levels of legality, I think that your reasoning is a valid argument against crossing the line between 2 and 3. However, I don’t think that it’s a valid argument against what Zvi is actually proposing, which is going from 1 to 2. If we have an obligation to help people who have APD, then the most cost-effective/highest-utility solution might involve making gambling less convenient for the general population.