I don’t understand: If we use the Venturi effect, that means we’re pulling air and mixing it with gasoline. Are we really pre-mixing air+gasoline into the tank

I don’t understand: If we use the Venturi effect, that means we’re pulling air and mixing it with gasoline. Are we really pre-mixing air+gasoline into the tank? Isn’t that a much higher risk of sudden explosion, compared to a tank with only carburant and no comburant?