Atheism can send the wrong message across to people, especially those weaker in faith but brushed off and laughed at by every religious sect out there. It is not a religion, just a group of non believers.
Yes you are right. People should realize that Atheism comes from a lack of knowledge and information and misinterpretation of their understanding of what is and what is not.
But, common knowledge and logical explanations can often decide the battle between a religious sect and an Atheist group.
It is highly ridiculous to disregard the fact that God does not exist when we have some common sense.