On Wed, 25 Apr 2018 10:32:08 -0700, Jibini Kula Tumbili Kujisalimisha
wrote:

It is seldom that. I don't actually know any atheists who make
that claim, and I certainly don't. It almost always means a lack
of belief in deities, not a claim that there are none. Atheism
makes no claims at all.

Not common usage. If you insiste on redefining words, you need to
make that clear or you'll look stupid.

This is BY FAR the most common usage.