This is correct. Liberal theologians dismiss Adam and Eve's sale of humanity to the devil and ignore the catastrophic plunge into sin this caused to the human race. They ignore the fact that God was entirely just in wiping all mankind (save Noah and his family) off the face of the earth during the flood. In just over a thousand years, mankind had fallen to the point where 'the thoughts and intentions of man's heart was only evil continuously'.
They ignore that time and time again, that human depravity has poked its ugly head up again and again. Pharaoh's destruction of the first born, Haman's plans to exterminate the Jews, Herod's following Pharaoh's footsteps in Ramah. In the last century alone, Hitlers Holocaust, Stalin's purge, and Saddam's gassing of the Kurds.
Mankind has continually sunk down to the lowest levels God has allowed and it is no different today.
Our society continually tries to delude itself that it is different and that we don't need the law and to protect ourselves. We continually think that we don't need to follow God's Word and it is OK to flirt with abortion, illicit sex and homsxulty and that there will be no consequences.
Why God did not give up on mankind, back in the Garden, is still amazing to me. We did not deserve the promise of a Savior "You shall bruise his heel, but He shall crush your head". We did not deserve that the Lord Jesus Christ took the bruising for those the likes of such as you and I. We don't deserve the assurance of Salvation and an Eternal love relationship with God in heaven.
But God, May His Name be praised forever, decided not to leave many of us in to our own destinies and has reached through the mire of sin, cleansed us in Christ and drawn us to His infinite Love.