Atheism is not based on analytical scholarship. It is a mere denial that any gods exist. Atheists do not consider the evidence that believers in God as Creator present to be worthy of any consideration because they have a very limited acceptance range for what they will consider 'evidence' to be. They conveniently hide behind the claim that evidence must be scientifically proven before they will consider it and, as God cannot be put into a test-tube or subjected to chemical analysis, they dismiss the idea of God out of hand.
However, you are right about godlessness being evidence of Humanism and its values. There are two characteristics that define Humanism at all times and in all cultures. First, dismissing, if not denigrating God's word to humanity. "Has God really said...?" Second, the exaltation of humanity - "You shall be as God!"
At first, that might appear to be contradictory for atheists who don't believe there's any God to say anything, or that humans can be as this non-existent entity they scoff at. But hang on a minute. Humanism challenges the very concept of 'ultimate truth' (as it does the concept of God). God is ultimate truth. Get the connection, now? Deny there is any such thing as ultimate truth and, simultaneously, you deny the authority of God. This is especially seen in the realm of morality. Humanism declares that man is the final arbiter of morality, so whatever people (society) declare to be moral becomes acceptable. Nobody need heed any ancient Ten Commandments, certainly not the first ones about relating to God, and then the other ones start to slide down the slope too. "Well, lying is sometimes necessary; little white lies and politicians just have to lie all the time to get what they want. And it's okay for me to deceive my neighbour and sleep with their partner - everybody's doing it these days." And so on.
Well, Jesus said that God's people will be sanctified (set apart) by the truth - "Your word is truth" - John 17:17. So, even if you cannot see the wood for the trees, spiritually speaking, look out for Christians who are upright, standing tall in integrity to honour God, not self, turn to Christ in faith and join a global family of believers who are united in seeking to help all, for we are all made in the image and likeness of God.