That's not what it means at all.The point is you can't judge the sins of others because you yourself have sin. The sin is judging others.
Its the most logical thing in the entire bible.
It means do not judge others by standards you do not enforce upon yourself. And if you do judge be very very careful because you will deserve whatever you mete out.
In other passages it is rephrased as do not attack others for small debts when your larger debt has been forgiven.
Basically don't be the Judge.... it does not mean you should shut up about the judgements of the Judge.
