Maybe the reason people don't recognize that scientists are the ones responsible for atheism is because it is not true.
Atheism means without god (from the Greek "a" which means without and "theos" which means god/gods). Every human being is born an atheist. We have to be taught to believe in gods. That is why almost all people have the same beliefs about god and religion as their parents.
Some people are never taught this so they never believe in god/gods. Some people are taught to believe, but later reject these beliefs because they don't seem true or they don't make sense. They then look to alternate explanations for existence and find them through the application of science, philosophy, logic, or other disciplines. But even uneducated people can be atheists.
Far from not recognizing that scientists are responsible for atheism, science is frequently credited with causing atheism. However, there are some scientists that continue to believe. For instance, the eminent scientist Stephen Jay Gould (American paleontologist, evolutionary biologist, and historian of science) posited NOMA--non-overlapping magisterium. Science was one and religion was the other. Neither should be used to try to explain the other.
Some religious people say that science is the way man can understand God's creation. For this reason, the Catholic Church was the main supporter of science during medieval times and beyond.
However, for many people, science and religion are mutually exclusive. One relies on fact; the other relies on faith. So they arrive at different conclusions.
I think that Stephen Hawking was an atheist even as a child. In his autobiography, Hawking says that his father was an atheist. Science did not make Hawking be an atheist, but appears to have resolved any doubt he might have had on the matter.