Sadly, I have heard otherwise intelligent, scientific people (literally, working scientists) ranting about how "God is a delusion" and that anyone who understands science should "realize that there is no such thing as God." I've also sat through lectures in mild shock that the lecturer felt that university classroom time was an appropriate place to mock Christianity for most of his lecture. At the very least, it was unprofessional.
None of those things are the same as saying that science proves that god doesn't exist, which is a ludicrous statement, and nobody with any understanding of the scientific method would make such a statement.