I think the point is that most of us wouldn't get in the car with the drunk driver because we would judge it to be unsafe.
But if we would get into a car fitted with Chinese ditchfinders, on a rainy night, with our family... then possibly what we actually think about the Chinese tyres is that while they are not 'as safe as....', they are still 'safe enough'?
Safe enough for what? For a single journey or for covering 10,000 miles? For what kind of driving? Suppose the 50 mile trip to the airport on those unsafe tyres has 0.01% risk of fatality. If you abandon the trip and do not go for holidays the stress and frustration might give you are higher risk of,say, dying from heart attack making it worthwhile to take the risk.
But install those tyres on your car and 50 miles becomes 5000 miles and that 0.01% risk becomes a 1%. Also take into account that taxi driver will probably drive smoother than you, especially when alone, and that 1% risk might become a 5% risk - a huge risk.