I think it's okay to express or publish one's reasons for holding a specific belief or set of views and values. This allows others the opportunity to listen to, deeply understand and evaluate another's ideas. This is particularly useful if the listener is young, curious and seeking to know more about how the peoples of this world think.
What doesn't work is insisting on trying to persuade others that one's own view is the only correct view. Others have an equal right to their views even if we disagree.
Most people jack up and become defensive or angry if someone tries to talk them into something against their will.
Most atheists keep their views to themselves.
But it might be helpful try to understand why there is an increase in some atheists seeking to propagate their views.
We see the amount of harm that occurs under the banners of the major religions: the Inquisition, the Crusades, religious wars and jihads, the oppression of women, in some instances the justification of racism, the use of religion to gain power over land, wealth, resources, and other humans, institutionally condoned child abuse and rape, cruelty to animals and exploitation of the planet, and unavoidable hypocrisy on vast scales.
Of course, there is also good done in the name of religions: the Red Cross and Green Crescent; many charities run by religious groups, beautiful architecture, music, art and cultural artifacts, and the encouragement to lead an ethical and moral life. Some religious people do live profoundly good lives.
If most did, I might I have been persuaded to join one of their groups. But these few are the rare exceptions.
The basic fallibility of humans cannot be rescued by faith; hundreds of centuries of history have proven it. We need to try new ways of trying to build a better world.
For atheists, one of the most dangerous aspects of religion is its insistence on believing in a God whose existence cannot be proven with either fact or logic. Conversely it's easy to prove God doesn't exist with both logic and fact. Atheists believe that the tendencies of religion to convince people of that which is not real is dangerous for society as a whole; it inculcates gullibility and a willingness to not accept reality as it is, as the evidence shows.
We cannot address the problems or people's emotions, or social, economic or ecological issues unless we first understand what causes them and develop the means to educate people on how a why we need to live ethically, treating all other sentient life as equal in value to our own.
