Yes and No. It's true that a person's behavior is reflective of what's in their heart and their behavior condemns them.
However, the Christian is always mindful, that God created us all, God loves us all despite our behavior, and we have the potential to become what God intended for us. All of us have been condemned by our behavior in some way or another.
But it is not for us, to look and say that a person who exhibits bad behavior is not worthy of God's mercy should they repent. It is for us to see every individual as God sees them and with the potential that God sees them with.
That's why Ken Ham separates the behavior from the person.