I don’t disagree that some atheists can find meaning and purpose in their lives. I just think it undermines their position.In that case you are correct but we cant make that a general statement. Im certain an atheist can have a meaningful life. Its a process in psychology not religion. Religion can be a barrier in that it dictates meaning when meaning must be chosen by the individual based on their life experience.
I would also argue that this inherent need for meaning is the result of design