US drug policy is more "which population demographic uses it?" based than anything else.

If you said people who carry firearms when drunk, I might be inclined to agree.

But if you mean more generally people who drink, vs. people who smoke weed, I would expect to find the type of people who use illegal drugs (even weed) would be far more concerning on average.

It isn't that unbelievable. This came in direct response to the Black Panthers armed protest in Sacramento in 1967. The law came in 1968. You have to remember that power then, and still now in a lot of ways, was racist.

Ah, the 1960s.

The Supreme Court doesn’t have the power or the need to rewrite the form. Either the Executive rewrites the form to comply with this ruling, Congress passes a law ordering the Executive to rewrite the form, or someone answers the form truthfully, gets denied, and then sues the ATF. Depending on how the case is filed and relevant case law, the court can order the ATF to issue a permit to the plaintiff, or order the ATF to stop denying permits to anyone who is in a similar situation to the plaintiff. (The recent rulings about nationwide injunctions are directly relevant to this discussion.)

- are you an unlawful user of or addicted to, [list,x]

so user of [x] disqualifies, or seemingly addiction to [x] no usage required will also disqualify

if federally you are a lawful medical recipient, you could qualify, it might be grey, as the combination of firearm and medical marijuana might become illegal use even with a prescription.