Some of the most common accusations against atheists seem to be about assumed dogma. The truth is, I haven’t yet found a list of beliefs an atheist adheres to. The only requirement is unbelief. Specifically unbelief in a god or gods. Beyond that one linking requirement you will find atheists all over the spectrum on any given topic.
Is science atheist dogma? No. Science is not a dogma. It is a process. As an atheist I do not claim to have the answers to all things. Especially things that at this time we can not know. What I can say is that using science we are able to recognize Best Answers with the information we have at any given time fully recognizing that our Best Answers are subject to influence of new information and knowledge.
I find this far more satisfactory than any dogma.