Everyone instinctively knows about God and sin. The suggestion by a person who has just heard defining details about God and sin, that he now has learned something new, is simply his automatic method to attempt to talk his way out of something... to make excuses for what he knows deep down anyway.
There are many, and have always been those, who receive and received the message of their salvation with gladness. The message about God and sin is a thing that needs to be brought to our awareness so that we can receive the message of God our Savior properly.
Perhaps you know about the later life of the Eskimo in the picture. Did he turn and repent and believe the good news of his salvation through Jesus? Or did he wander off remaining in his natural unsaved state?