Well when you shake it the viscosity difference isn't noticeable. A shaken martini sucks but I wouldn't call it "ropey". They aren't putting it in the freezer,

Well when you shake it the viscosity difference isn't noticeable. A shaken martini sucks but I wouldn't call it "ropey". They aren't putting it in the freezer, they're stirring. As that link you posted shows, stirring for 7 minutes and shaking probably get about the same dilution/chilling.