That's not really what it says. Presumably Smeed's law does not hold up in the face of dramatic qualitative changes like that - but that doesn't disprove it in

That's not really what it says. Presumably Smeed's law does not hold up in the face of dramatic qualitative changes like that - but that doesn't disprove it in a practical sense since driving drunk is illegal in nearly all countries (presumably all that are sampled on that graph?) and isn't likely to become legal.