I don't quite understand what the situation is with the safety ground.
In theory, it evens out the voltage to zero but only if the resistance is exactly zero.
Even if the ground has only a resistance of say 3 ohms then that means a person making contact with the line will still get 230V, and the voltage causes the current. In two resistors connected in parallel, the magnitude of the current does not affect the current of the other. Is there as much current flowing through that person as it would be without the grounding?
Does the grounding only make sense if a ground fault circuit interrupter is also installed?
Addendum: The situation is basically like two resistors mounted in parallel: the voltage over both is the same and the current over each resistor is only caused by this voltage. The current over one resistor does not change if a resistor is added in parallel, whatever its value.