Second, the fact that a particular act might be legal does not mean that it is legal to do it in connection with a crime. There is nothing illegal about driving a car. There is something illegal about driving robbers in a car away from a crime scene.
Third, willful blindness is not a defense to any charge that requires showing knowledge. Anaya purposefully profited from criminal activity, and even if he didn't know the specifics of the plan, it's only because he purposefully tried to avoid learning of them. The law simply imposes a higher level of social responsibility than that.
Now, it's a fair criticism that drug enforcement is a waste of resources and drug sentences are too long. But that's quite a separate issue to the points you raise. Say that instead that Anaya was installing traps to help members of child prostitution rings convey cash around. The analysis of his involvement would be the same.