Religion does not define a person. The person themselves define who they are by thoughts, words, actions. People say so many things, but in the end what they do is the most important thing to consider.
There are so many facets to a person, religion is just a part. Many people have religion, ok, they also have obligations to the society at large, friends, family etc. They may have other practices such as writing poetry, running, body building, martial arts, painting, gardening etc. All that a person does is what makes them who they are in this world.