I agree (mostly), but they are not. Society has decided that certain drugs are illegal (for now). This point doesn't really have anything to do with anything.
> 2. His sentence isn't about trying to cripple the drug trade, but about punishing someone the government does not like.
How do you figure? Did they just pick him out randomly and decide to find whatever they could on this guy? I would probably think that the people prosecuting him believed he had significant impact in enabling certain drug trades.
> 3. The same motivation could someday be used to prosecute people who serve cheeseburgers to drug dealers at a restaurant under the theory that they were helping those drug dealers to deal drugs (you can't deal drugs if you're starving).
This is ridiculous, and completely undermines everything else you said.
24 years for building hidden compartments is a joke, even if he knew what they were being used for. Current drug laws are a joke. Governments enable a tonne of bad behaviour by denying people access to substances they want that rarely hurt others.
But making outrageous claims about serving food to a drug smuggler helps no one.